a nephew's kid to his aunt's kids would be their cousin.
Your great aunt is either your father or your mother's aunt.
Great Aunt to Great Niece.
She would be your great aunt.
You Aunt is you grandson's Great-Great Aunt. Your grandson is your Aunt's Great-Great Nephew.
Your aunt's daughter is your first cousin.
She was Andy's aunt (Andy's mom and Aunt Bea were sisters).
When your aunt is your aunt because she married your father's brother, her mother is not related to you.
aunt
Your great aunt's grandson is your second cousin.
You are their aunt or aunt by marriage.
Your great-great aunt is your daughter's great-great-great aunt.