The Top 20 US Presidents of Irish Ancestry

1 Andrew Jackson (both parents born in Ireland)

2 James Buchanan (both parents)

3 Chester Arthur (father)

4 Woodrow Wilson (paternal grandparents)

5 Grover Cleveland (maternal grandfather, maternal great-great-grandmother)

6 Andrew Johnson (paternal grandfather)

7 John F. Kennedy (all eight paternal and maternal great-grandparents) 8 Benjamin Harrison (two maternal great-grandfathers)

9 Ronald Reagan (two paternal great-grandparents)

10 Ulysses Grant (maternal great-grandmother)

11 William McKinley (two paternal great-great-grandfathers)

12 James Polk (paternal great-great-great-grandfather)

13 Barack Obama (maternal great-great-great-grandfather)

14 Richard Nixon (paternal and maternal great-great-great-great-grandparents)

15 Theodore Roosevelt (maternal great-great-great-great grandparent)

DISTANT OR UNCONFIRMED:

16 George H. Bush (at least one Irish ancestor at great-great-great-great-grandparent level and above)

17 Lyndon Johnson (Irish-born great-great-great-great-grandparent unconfirmed)

18 Jimmy Carter (Irish ancestry unconfirmed)

19 Leslie (Lynch) King (later Gerald Ford: Irish ancestry unconfirmed)

20 William (Cassidy) Blythe (later Bill Clinton: Irish ancestry unconfirmed)

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Nster.com