The father of a father is a grandfather, a grandfather's father is a great-grandfather, a great-grandfather's father is a great-great-grandfather, but no word has been decided upon for the generations before great-great-grandfather.
Source: tatoeba (504785)
Tom's great-great-grandfather was a pirate.
Source: tatoeba (1092151)
My father, grandfather, great-grandfather and great-great-grandfather all had the same name as I have.
Source: tatoeba (2150564)
This is the only picture I have of my great-great-grandfather.
Source: tatoeba (3308376)
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