Your grandfather's child is either your parent (mother or father) or your aunt or uncle.
The correct possessive form of "grandfathers" is "grandfathers'".
grandparentGreat Aunt or Great Uncle
Your grandfathers' sisters' grandchildren are your second cousins.
Maggie Blick has written: 'Remembering Malcolm Macquarrie' -- subject(s): Fiction, Granddaughters, Grandfathers, Grandparent and child
The cast of The Gift of the Grandfathers - 1997 includes: Gordon Tootoosis as Narrator
dsthfkalssa
She will be your aunty
Two people whose grandfathers were brothers are second cousins to each other.
bob i think
Ted
cousin
cornilious