Forfædre til John Fosdick Clarkson op til ? ?
Generation 1
1 -
John Fosdick Clarkson
Generation 2
3 -
Kathleen Eleanor Burk
Generation 3
6 -
Daniel Francis Burk
1849-1917
Generation 4
13 -
Clara C. Coryell
1824-1895
Generation 5
27 -
Sarah Farewell
1807-1907
Generation 6
54 -
William Fulton Farewell
Generation 7
109 -
? ?