She would be his Great Aunt
Brenden Bosco
Wiki User
∙ 10y agoYour sister's grandson is your great nephew. You are his great aunt (if you are a woman) or his great uncle (if you are a man).
Mother's grandson as regards her daughter is either her (daughter's) son or her (daughter's) nephew.
The son of your Uncle's son is your uncle's grandson. Your uncle's grandson is your first cousin, once removed.
Your great grandparents brothers and sisters are your great uncles and great aunts.
The grandson of your first cousin and your grandson are third cousins to eachother.
Your sister's great grandson is your great great nephew. You are his great great uncle, or great great aunt.
nothing
There is no relation between you and your grandmother's cousin-in-law's grandson.
Your sister's son is her grandson and your great nephew. Some use the term "grand nephew."
Your sister's son is her grandson and your great nephew. Some use the term "grand nephew."
Your father's great grandson could be your grandson, or your great nephew.
You and your uncle's grandson are first cousins once removed.
Your grandson is your sister's great nephew and she is his great aunt.
You grandson is great great nephew to your uncle. You uncle is great great uncle to your grandson
You grandson is great great nephew to your uncle. You uncle is great great uncle to your grandson
The grandchildren of siblings are second cousins to each other.
Your grandson and your great nephew are second cousins to each other.
Great Grand Nephew