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someone edited out this important info

that this Walker was grandfather of the two Bush US Presidents

and that this walker's ancestors were chiefs of the Narragansett
and Wampanoag Am Indian tribes ... as follows 

His two grandsons became Presidents of the USA - George Herbert Walker Bush (41st US President named for his grandfather) and his son George Walker Bush (43rd US President also named for his grandfather).

 Early American Ancestors 

Through George Herbert Walker's American Indian ancestors, his two descendants, the two Bush Presidents of the USA (George Herbert Walker Bush and his son George Walker Bush), are the only two American Indian descended US Presidents in US History.

These American Indian ancestors included sachems or chiefs of the [[Narragansett {tribe)]] of Rhode Island and Wampanoag tribe of Massachussetts.

Source to Walker Bush American Indian ancestors
The Bush Family (2004)
ISBN 0-595-66806-2 
Language English 290 pages 

giving the line to today as follows 

1 Tashtassuck - Sachem of the Narragansett Tribe b: ab 1530 d: aft 1620

2 Wessonsuoum  of the Narragansett Tribe b: bef 1520
  + Keneschoo of the Narragansett Tribe b: ab 1525

3 CANONICUS - SACHEM OF THE NARRAGANSETT TRIBE b: 1562 d: 4 JUN 1647
  + Posh-Pw - of the Narragansett Tribe b: 1565

4 Daughter of Canonicus - Princess of the Narragansett Tribe b: 1567
  + IYANNOUGH - SACHEM OF THE WAMPANOAG TRIBE b: 1554 d: 1641

5 IYANNOUGH - SACHEM OF THE WAMPANOAG TRIBE b: 1595 d: 1623
  + ""Mary"" Noepe - Princess of the Wampanoag Tribe b: ABT 1597

6 MARY HYANNO of the WAMPANOAG TRIBE b: ab 1623 d: 1660
  + Augustine (Immigrant, 1638 “Confidence”) Bearse b: 1618 d: aft 1686

7 Sarah (President Bush Ancestor) Bearse b: 28 MAR 1646 d: 30 MAR 1712
  + John (President Bush Ancestor) Hamlin b: 26 JUN 1644 d: 1718

8 Ebenezer Hamlin b: 12 MAY 1683 d: 1736
  + Thankful Hamlin b: 24 AUG 1689 d: 15 JAN 1768

9 Thankful Hamblin b: 6 AUG 1715 d: AFT 1768
  + Joseph Bangs b: 30 JAN 1713 d: ABT 1757

10 Lemuel Bangs b: 31 DEC 1739 d: 9 MAY 1824
  + Rebecca Keeler b: 29 APR 1751 d: 24 FEB 1812

11 Elijah Keeler Bangs b: 4 JUN 1780 d: 13 SEP 1846
  + Esther Stackhouse b: 17 OCT 1787 d: 27 SEP 1819

12 Mary Ann Bangs b: 15 JUN 1817 d: AFT 1876
  + Joseph Ambrose Beaky b: 14 JUN 1818 d: 27 JAN 1858

13 Martha Adela Beaky b: 1 JUN 1841 d: 1 JUL 1917
  + David Davis Walker b: 19 JAN 1840 d: 4 OCT 1918

14 George Herbert Walker b: 11 JUN 1875 d: 24 JUN 1953
  + Lucretia ""Loulie"" Wear b: 17 SEP 1874 d: 28 AUG 1961

15 Dorothy Walker b: 1 JUL 1901 d: 19 NOV 1992
  + Sen. Prescott Sheldon Bush b: 15 MAY 1895 d: 8 OCT 1972

16 PRESIDENT GEORGE HERBERT WALKER BUSH b: 12 JUN 1924 d: Living
  + FIRST LADY BARBARA PIERCE b: 8 JUN 1925 d: Living

17 PRESIDENT GEORGE WALKER ""DUBYA"" BUSH b: 6 JUL 1946 d: Living
  + FIRST LADY LAURA LANE WELCH b: 1946 d: Living

   18 Living (twin) Bush 
   18 Living (twin) Bush 

17 GOV. JOHN ELLIS ""JEB"" BUSH b: 11 FEB 1953 d: Living
  + Living Gallo"