DNA test results:

I belong to Group 1 at the Blair Genealogy DNA site, and have a perfect 26 marker Y-DNA match for 4022, 4023, 4786, 4066, 4189, 4991, 5055, 5166, 12276

ancestor:
0007a #4022, #4089, #5166, John J. Blair SR Mar 15, 1800 Newberry District, SC d 1881 Oct 2, 1881 Pike County, AL m Cedena Stephens

0008a #4023 William H. Blair Feb 20, 1800 VA Dec 14, 1870 Laurel Co., KY m Jane Cooper, Hannah Crawford

0011, #4066 George Henry Blair Feb 22, 1892 Harding County, KY May 12, 1976 Alma, AR Evelyn Anna Lawrence Martin Luther Blair, b. Kentucky (George Henry Blair parents were Martin Luther Blair, b. Kentucky and Addie Mae Smith d. 1904)

0015, #4189 Andrew Blair, Apr 24, 1774 Guilford Co. NC d Aug 17 1857 Round Rock, TX m Jane Dickey Andrew is the son of John Blair b abt 1742 m. 1762 d. 1778 in Guilford Co. NC and Jean Unknown son of John Blair b: ABT. 1700 in Probably Ulster, Northern Ireland m Married: 1719 in Surry, N.C to Martha Blythe son of William BLAIR b: ABT. 1660 in Probably Scotland

0023, #4991 Joseph Alvin Blair Dec 21, 1881 St. Joseph, Missouri St. Joseph, Missouri m. Annie Abner

0025, #5055 William Wesley Blair 1805 Jul 25, 1886 White Oak, AL m. Sarah Elizabeth Bishop William is the son of David Blair d. 1821 in SC and Core Williams. David is the son of William Blair d. 1814

0053, #12276 Hugh Blair 1706 Ayrshire SCT or N. IRE Aug 1783 Surry Co., NC m. Mary Dawson Hugh Blair may be the son of John Blair - Guilford Co., NC and Martha

0055, #13050 my ancestor, Thomas Blair 1762 Antrim IRE died Dec 29, 1840 Fairfield Co., SC m. Margaret Hussey

I have a very close DNA match with 4089 4849 4382 4052 4776 6086 9332 and 5890 (perfect match but only tested 12 markers)

I have a close match with 5891 (differs by 2 markers)


Related Groups

0010 (matches 4052) see below
  John Blair? b abt 1710 1710 Orange or Augusta County, Virginia died - bef. 1747 Frederick, Virginia
    John Blair b Apr 1739 Frederick County, VA mMar 31, 1760 d Abt 1768 Washington County, PA
     +Sarah Hibberd Aft 1733 Washington County, PA d 1810 Washington County, PA
        Joseph L. Blair b Dec 16, 1762 PA d1814 Harrison County, KY
          +Hannah Garrett 1767
             Presley Blair Sep 15, 1800 Harrison County, KY d Oct 17, 1851
               +Elizabeth Betsy West Sep 15, 1800

#4052
  John BLAIR b:Abt. 1710 Orange or Auga County, Virginia ?d: BEF.MAY 1747 in Frederick, Virginia
   1 John Blair b: APR 1739 Frederick Cty, VA d: 1768 Washington Cty, PA
     + Sarah Hibberd b: ABT. 1742 d: 1810 Married: 31 MAR 1760 in Prob Chester Cty, PA
         2 John Blair b: 16 NOV 1766 d: BEF. 1808
         2 Samuel Blair b: 16 MAY 1765 d: 27 FEB 1831
           + Mary Polly Russell b: ABT. 1775
         2 Joseph Blair b: 16 DEC 1762 d: 1814
           + Hannah Garrett (GORRELL) b: 19 SEP 1767
             3 John BLAIR b: 2 NOV 1787
             3 James Gorrall BLAIR , Sr b: 30 AUG 1789 d: 5 SEP1832
             3 Presley BLAIR b: 15 SEP 1800 d: 17 OCT 1851
             + Elizabeth (Betsy) WEST b: 1808 d: BEF. 1850
               4 Joseph Rowland BLAIR b: 22 MAY 1831 d: 2 MAY1908
               + Martha Ellen VAN VACTOR b: 16 OCT 1839 d: 23 JUL 1934
                   5 William Franklin BLAIR b: ABT. 1861
                   + Sonora Davis HINKSON
                       6 Joseph Roland BLAIR
                     + Una Norine ALLEN
             3 Samuel BLAIR b: 3 JUL 1791
             + Jane ----
             3 Rachel BLAIR b: 28 MAY 1793 d: BET. 1811 - 1826
             + John NEWELL
             3 William G BLAIR b: 6 FEB 1797
             + Christina ---- b: 1798 d: 2 OCT 1877

0020 #4776
James Blair Sr.abt. 1718 Ireland ??? d Abt. 1820 Woolwich, Sagadahoc, ME
  +Jane Todd abt. 1719 England? 1823 Woolwich, Sagadahoc, ME
    James Blair 1753 Woolwich, Sagadahoc, ME d Mar 28, 1838 Woolwich, Sagadahoc, ME
    + Mehitable Robinson d Oct 7, 1812 Woolwich, Sagadahoc, ME
      James Blair abt 1788 Woolwich, Sagadahoc, ME Nov 27, 1873 Woolwich, Sagadahoc, ME
       + Elizabeth Reed Apr 17, 1789 Woolwich, Sagadahoc, ME d Apr 19, 1873
           Benjamin Carney Blair Jan 3, 1821 Woolwich, Sagadahoc, Jun 15, 1894 Bath, Sagadahoc, ME
            + Annis W. Ross May 1823 Aug 26, 1851d Bath, Sagadahoc, ME

0033 #5890 (incomplete test-12 markers only).
     John BLAIR b: 1700 - 1720 in Scotland d: 1801 - 1821 in Northern Ireland at age 101
        Hugh Blair b: 1741 in Donegore, Co Antrim, Ireland
          +Jane THOMPSON (Janette) married 1774
              Hugh BLAIR b: 1732 in County Antrim, Ireland d: 1837 in Crawford County PA
                  John BLAIR
                     Hugh BLAIR b: 14 Dec 1809 in Crawford County PA d: 2 Apr 1886
                        +Margaret CALVIN
               Henry BLAIR b: 1775 in Ireland
              Ann Jane BLAIR b: 1777 in Donegore, Co Antrim, Ireland
              Elizabeth "Betty" BLAIR b: 1778 in Ireland
              John BLAIR b: 1780 in Ireland
              Moses BLAIR b: 1783 in Ireland
              Robert BLAIR b: 1785 in Ireland
              David (Rev.) BLAIR b: 1787 in Ireland
              Margaret "Peggy" BLAIR b: 1791 in Donegore, Co. Antrim, Ire
              William M. BLAIR b: 1793 in Ireland
              James BLAIR b: 1797 in Ireland


0034 #5891
     Adam Blair Sr.Abt 1772 Scotland Mar 15, 1855 Jackson, OH
     +Mary Forbes Abt 1775 Ireland Apr 9, 1860 Jackson, OH

0028 #6086 and #9084
   Robert Blair Bet. 1683-1684 Aghadowey, Londonderry, IRE Oct 14,1774 Worcester, Worcester, MA
     + Isabella Rankin 1685 IRE d Feb 10, 1765 Worcester, Worcester, MA
         Matthew Blair 1704 Aghadowey, Londonderry, IRE d Sep 22, 1770 Blandford, Hampden, MA
         + Mary Hamilton 1702 IRE d Mar 21, 1753 Blandford, Hampden, MA
           Jacob Blair Apr 17, 1735 Nov 18, 1815 Blandford, Hampden, MA
             + Martha Gilmore Nov 1, 1734 Derry, Rockingham, New Hampshire d Jul 5, 1805 Blandford, Hampden, MA
                John Blair Sep 18,1765 Blandford, Hampden, MA 1796 Jan 7, 1851 Mantua, Portage, OH
                  + Martha "Patty" Smith Oct 13, 1778 Chester, MA Apr 24, 1870 Mantua, Portage, OH 
                     Jacob Blair 1809 Mantua, Portage, OH d Aft 1875 Michigan
         David Blair 1708 or 1709 MA d Feb 20, 1804 Warren, MA
          + Mary ___
              William Blair May 01, 1733 MA Dec 07, 1827
                +Agnes Marr d Jan 23, 1825
                   Daniel Blair May 20, 1762 MA Oct 14, 1850 Warren, MA        
                    + Betsy Moore Blair b Oct 30, 1775 d Aug 16, 1857     
                       Roswell Blair Oct 22, 1809 OH d Feb 20, 1879 Newbury, OH   
                         + Ann Rebecca Dean 1812 1902 Newbury, OH 

Ancestor #0007b Part. ID #4849
   John Blair Mar 15, 1800 Newberry District, SC m abt 1830 d Oct 2, 1881 Pike County, Troy AL
      Leonard M Blair Feb 26, 1834 Pike County, Troy AL m Dec 3, 1857 d. Dec 3, 1862 Pike County, Troy AL
       + Kitty Ann Stephens Apr 21, 1810 NC d Jun 15, 1874 Pike County, Troy AL
           John Lambertine Blair Feb 2, 1860 Pike County, Troy AL m Nov 8, 1879 d.Jul 9, 1926
            + Mary C Walters abt 1840 ??? Troy AL d abt 1915 Elba AL
                Major Clifton Blair Oct 10, 1896 Pike County AL d Jan 4, 1965 Greenville AL

           

#0008a #4023 Jane COOPER #4382 Hannah Crawford
    William Blair Greene Co Tn from ca 1812-ca 1833
       William H. BLAIR Feb 20, 1800 d: Dec 14, 1870 Laurel Co., KY
         + Jane COOPER Feb 7, 1802 m Jan 29, 1823
           John Blair Jun 5, 1833
           + Margaret Leuticia Crawford Apr 20, 1843
               Elmer Luther Blair Feb 4, 1877
                 + Ida Belle Magee Jun 26, 1881
                    Hobert David Blair Feb 7, 1900
                    + Esper Vivian Mills Aug 1, 1905
        + Hannah Crawford Apr 22, 1837 m Sep 27, 1866
            William Richard Blair b: Dec 26, 1867
             + Maria Virginia Grady Sep 15, 1877
                 Richard Leroy Sr Blair Aug 8, 1910
                
+ Lois Middleton Jul 17, 1914


#0015 #4189
   John Blair b: ABT 1700 ( 1742) in Scotland m, 1762 d 1778 Guilford Co.
   + Jean (unknown)
       Thomas BLAIR b: 1 Feb 1764
       John BLAIR , Jr. b: 22 Oct 1767
       Jean BLAIR b: 26 May 1771
       Martha BLAIR b: 14 Feb 1776
       Jonathan BLAIR b: 6 Mar 1778
       Nancy BLAIR b: ABT 1779
       Andrew Blair, I Apr 24, 1774 Guilford Co. NC d: Aug 17 1857 RoundRock, TX
       + Jane Dicky ( Dickey) May 15 1778 Kentucky m Feb 15, 1857 d: Feb 25 1858 Round Rock, TX
         Andrew Blair, II Jan 12, 1810 Al d: Sep 24, 1888 TX
          + Nancy Sellers Jan 10, 1810 Livingston Co. KY m Oct 7, 1830 d: Dec 18, 1851
             Robert Donnell Blair b: 1834 d: 1910
              + Josephine Wilson Nov 23, 1841 Clarkesville, AR d: Apr 11, 1910 Roswell, NM
                John Insley Blair, II 1878 d: 1916
                 + Viola Conley Jun 4, 1885 d: May 16, 64
                    John Insley Blair, III Dec 20, 1910 Bethlehem, PA
                      John Insley Blair, IV 4189



Here is a related tree that conflicts slightly with #4189 records (see above)
   William BLAIR 1660 in Probably Scotland
       James BLAIR b: ABT. 1695 (impossible date!) in Scotland or Northern Ireland 11 MAR 1776 in Guilford Co., N.C..
      + Mary
          John Blair b: 1700 Ireland d: Feb 1772 Guilford Co. NC
          +Martha Blythe b: 1710 in Ireland,d: 8 OCT 1770 in Guilford Co. NC
             Hugh Blair was born ABT 1734 in Ireland, and died 1783.
             Jane Blair was born ABT 1735 in Ireland.
             Thomas Blair was born 1738 in Ireland
             John Carnahan Blair b:1742 in Northern Ireland d:28 SEP 1778 in Guilford Co. NC
             + Jean b: ABT 1746 in Guilford Co. NC Married: 1762 in Guilford Co. NC
                John Blair b: 22 OCT 1767 in Guilford Co. NC
                Thomas Blair b: 1 FEB 1764 in Guilford Co. NC d: d: 7 FEB 1841 Newton Co, MO had resided Davidson Co, TN
                 + Sarah Carnahan b: 1760 d: Wft Est. 1794-1860
                   John Carnahan Blair b: 1790 William C. Blair b: 1791
                   Andrew Blair
                   Hugh Stephen Blair
                   Elizabeth Blair Jennie Blair b: 1794
                   Jessie M. Blair b: 1800
                   Jonathan Blair b: 1805
                   Jane Blair

#0034 Part. ID# 5891
    Adam BLAIR b: 1773 d: bet 1850-1860 Mar 15, 1855 Jackson, OH
     +Mary Forbes Abt 1775 Ireland d: Apr 9, 1860 Jackson, OH
         Mary BLAIR b: 16 DEC 1818 d: 28 AUG 1903

Ancestor #0042 Part. ID #9332 which is also claimed by #7636 who's DNA does not match so results are uncertain.
John Blair b:1689 Lowlands of Scotland d: 1723-1780 in Ireland
 +Mrs (Rev) John BLAIR b: Abt. 1690
   William BLAIR b: 1720
   Alexander BLAIR b: 1716 (1740) in Armagh, Ulster, Ireland (Donegal) d:1798 in Blairs Station, Kentucky Pvt,Cpt. Bell's Company
    +Elizabeth COCHRAN b: 1732 in Lancaster County PA
      Alexander, Jr. BLAIR b: 1763 in Carlisle, Cumberland Pa d: 1824
        +Sarah ROBERTSON
      Thomas Blair b: 13 Feb 1758 in Carlisle, Cumberland Pa. d. 26 Mar 1814
        + Elenore Evans
      William Blair b: 1760 in Carlisle, Cumberland Pa. d. 1840
        + Catherine Evans d 1817
             James BLAIR b: 1 NOV 1786 d: UNKNOWN
             William Cochran BLAIR b: 16 MAR 1791 d: UNKNOWN
             David Evans BLAIR b: 25 MAR 1793 d: UNKNOWN
             Samuel BLAIR b: 4 MAY 1795 d: UNKNOWN
             Alexander BLAIR b: 31 MAY 1799 d: UNKNOWN
             Thomas BLAIR b: 6 May 1789 d: 6 Oct 1875
             + Margaret JOB b: 15 Oct 1788 d: 26 Nov 1877
                Newton BLAIR b: 20 Jun 1817 d: 31 Jan 1883
            David Evans BLAIR d: 1874
             + Sarah JOB b: 1791 d: 1882
                Morris William BLAIR

Ancestor #0053 Part. ID #12276
     John Blair???Guilford Co., NC and
      + Martha _____??
          Hugh Blair 1706 Ayrshire SCT or N. IRE m.1735 d. Aug 1783 Surry Co., NC
            + Mary Dawson 1706 SCT
               John Blair Apr 28, 1750 Lancaster Co., PA m Feb 09, 1771 d Dec 18, 1819 Washington Co., TN
               + Jean (Jane) Gamble Oct 06, 1756 d May 13, 1790 (1793) Washington Co., TN
                  Thomas Blair Jun 06, 1780 dm 1800 d Oct 28, 1866 Georgetown, Hamilton Co., TN
                    Josiah Blair Apr 1804 m. Sep 20, 1821 dFeb 20, 1874 Loudon, TN
                   + Jane Taylor May 18, 1801 d. Oct 03, 1862 Loudon, TN
                       James Gamble Blair b. Jun 26, 1829 Roane Co., TN m May 27, 1863 d Apr 04, 1890
                       + Margaret Elizabeth Carmichael May 14, 1841
                           Wiley Blair Mar 26, 1865 Augusta, GA m Jun 10, 1886 Aug 02, 1940 Dallas, TX
                             + Josephine Maxwell Foster Jul 24, 1866 Green Co., AL d Dec 02, 1932 Dallas, Tx
                               Edwin Foster Dec 15, 1901 Blair Weatherford, TX d. Nov 06, 1970 New Haven, CT
                               + Rosemary Kane Apr 11, 1902 Dallas, TX d Aug 25, 1979 New York, NY



Here is a link coming from William de Blair b. 1165 forward 9 generations. The following is constructed from Blairlin,
and various sources on the web, therefore not verified.

1John Blair b.1547
  +Grizel (Grace) Semphill (Semple)
    2 John Blair b.1574 (1565) d 1602-1609
      + Sobel (Isabel) Boyd b: ABT. 1574
        3 Brice (Bryce) Blair b: ABT. 1600
          + Esther Peden b: ABT. 1600
            4 Abram Blair b: ABT 1628
            4 John Blair b: 1637
            4 Randall Blair b: 1640
            4 Daniel Blair b: ABT. 1635 d: ABT. 1704
              + Jane Drummond b: ABT. 1639
                5 Samson Blair b: 1665
                5 James Blair b: 1668
                5 John Blair b: 1675
                5 Samson Blair b: 1674
                5 Samuel Blair b: ABT. 1667 d: 20 MAR 1754
    2 Bryce Blair b.1573-4
      +Annabella Wallace
          3 John BLAIR b: 1594 in Blair, Ayshire, Scotland
            + Beatrix Muir
              4 David Blair b: ABT. 1618 (1610)  (9 Jun 1603)
                  5 Abraham Blair  b:ABT 1644 in Aghadowey, Ulster,
                    + Hannah
                  5 James Blair b:1644-1650 (b: 1640/1644 in AGHADOWEY,Ulster,Ireland) d: 1706 (1732)
                     + Rachel Boyd b: 1644 Aghadowey, Antrim (1650 in SCOTLAND) married 1660
                       6 William(1) BLAIR was born 1682 in Scotland, and died 23 AUG 1724 in Framingham, Mass
                         + Mary Gray. b: ABT 1690
                       6  Robert BLAIR (Col.) b: 1683 in Aghadowey, Antrim, Ulster, Ire D: Oct 1744 in Worcester,Mass
                          +Isabella RANKIN b: 1683 in Ireland m 1703 immigrated in 1714?
                              7 Mathew BLAIR b: 1704 in Ireland

                                 + Mary Hamilton

                                   8 Jacob Blair b: Apr 17, 1735

                                     +Martha Gilmore

                                        9 John Blair Sep 18,1765

                                          + Martha "Patty" Smith

                                             10 Jacob Blair 1809

                                                + Charlotte A. Crocker

                              7 John BLAIR b: 1710 in Ireland d: 10 MAY 1796 in Western (Warren) Brookfield, Worcester Co., MA

                                 + Marcy (Mercy) HAYWARD b: 25 SEP 1710 Middlesex Co., MA m 24 MAY 1737 Worcester Co., MA

                                      8 Francis BLAIR b: 23 SEP 1737 in Warren, Worcester Co., MA

                                      8 Molly BLAIR b: 2 FEB 1739/40 in Warren, Worcester Co., MA

                                      8 Ezekiel BLAIR b: 1 APR 1742 in Warren, Worcester Co., MA

                                      8 Robbard BLAIR b: 18 AUG 1744 in Warren, Worcester Co., MA

                                      8  Sarah BLAIR b: 4 DEC 1746 in Warren, Worcester Co., MA

                                      8 Timothy BLAIR b: 14 SEP 1749 in Warren, Worcester Co., MA

                                      8 Samuel BLAIR b: 24 AUG 1752 in Warren, Worcester Co., MA

                                   + Katherine SHAW m 19 NOV 1771 in Palmer

                              7 William BLAIR b: 1716-1718 Worcester,

                             
7 David BLAIR b: 1708-1709
                                 +Mary

                                    8 William Blair b: May 01, 1733

                                        + Agnes Marr

                                            9 Daniel Blair May 20, 1762

                                                + Betsy Moore

                                                  10 Roswell Blair Oct 22, 1809

                                                       +Ann Rebecca Dean

                                                          11 George Oscar Blair b: Dec 10, 1832 Geauga Co, OH d: Oct 14, 1909 Newbury, OH

                                                             + Clarissa Samson Torrey Dec 03, 1833 d: Oct 01, 1920 Newbury, OH

                                                                12 Frank Arthur Blair Jun 13, 1876 Geauga County, OH

                                                                   + Kate Louise Finch Sep 21, 1876

                                                                       13 Virgil George Blair Nov 24, 1910 Bainbridge, OH

                                                                           + Kate Marcelia Pugsley b: Feb 12, 1984

                                                                               14 John Robert Blair #
6086
                              7 Robert BLAIR b: 20 Jan 1720 in Rutland, , Vermont

                              7  James BLAIR  (Lt.) b: 1718 (1719) in Worcester Reportedly had 11children

                                 + Mary TODD (Jane)

                                     8 Robert BLAIR b: ABT 1754
                                     8 John BLAIR b: 10 JUN 1760

                                     8  Hugh BLAIR
                                     8 Isabel BLAIR
                                     8 Betty BLAIR b: 6 MAY 1762
                                     8 Mary BLAIR married Richard Knowles 07 JUN 1792
                                     8 Samuel BLAIR b: 1743
                                     8 James BLAIR Jr died 28 MAR 1828
  another source adds:
     8 William BLAIR
                                         +Mary Bean married Sept 1790

                                         + Rebecca KNOWLES Married: 23 FEB 1793  Massachusetts or Maine

                                           9 William BLAIR

                                           9 John BLAIR

                                      8
Thomas BLAIR
                                           + Polly Lung ?

 #6800 DNA             
7  Joseph BLAIR b: ABT. 1732 in Ireland (1727 in Worcester)
matches
group 6         + Mary Elizabeth MAYS b: 1740 Married: BET. 1754 - 1784
                                      8  John Charles BLAIR b: BET. 1759 - 1765 in Harlan County, KY

                                         + Easter ROBERTSON

                                      8  Robert BLAIR

                      6 William (2)BLAIR ABT 1687, and died in Shrewsbury, Massachusetts
                      6 John BLAIR b: ABT. 1685 Ulster, Ireland, d: 1772 (1769 Cumberland, Pennsylvania)
                         + Elizabeth Cochran b: 1685 Married: ABT 1705
                         + Martha Mays Married: ABT. 1718 (1714) in Northern Ireland
          3 Bryce BLAIR b: 1594
          3 James Blair b.1576
    2 Robert BLAIR b: ABT 1567-68
    2 Hugh BLAIR b: ABT 1570
    2 Gavin\James BLAIR b: ABT 1572
    2 Alexander BLAIR b: ABT 1576 (1584)
    2 James BLAIR b: ABT 1580 (1576)