a father
a father of your grandparent
a person who is a grandfather
父方の.
a parent of your grandparent
the position of grand-father
the position of great-uncle
one's great-great-grandparents in China, the founder of a dynasty
a male relation one one's father's side, called
the parents of one's parents
of a father and son who have the same name, a word that is used to indicate which one of the two is the father
your grandmother