What relation is your aunt's mother's father's wife to you?

Answer 1

Your aunt's mother is your grandmother. Her father is your great grandfather and his wife is your great grandmother.

Unless he remarried after your great grand mother was born. In that case his wife is either your step-great grand motehr or is not related to you at all, depending on how you want to put it.

Answer 2

You are not related to your aunt's husband's son from another mother because you have no ancestors in common. He is your aunt's stepson.

If you have a very close family, or if he is very young, you might treat him as your first cousin and even call him that, but that would be a courtesy title, not a real biological relationship. Some people might call him your cousin-in-law, but that is a recently invented term that does not carry much meaning.

Answer 3

She grand aunt in law.

If ever Reference her you just say shes my grand auntie.

Answer 4

Your grandmother's aunt is your great great aunt.