Your father's brother is your daughter's great uncle. She is his great niece.
your 5th cousin
Your father's brother's son is your first cousin and your daughter's second cousin.
I think you mean "what do you call my father's sister's daughter?"She would be your 1st cousin and your fathers niece.___________________________________________________________Niece by definition is the daughter of one's brother, sister, brother-in-law, or sister-in-law. WhileCousin is by definition the son/daughter of your uncle or aunt.Accordingly, the daughter of the sister of your father is your cousinRefer to link below
Your daughter is your brother's niece. Your brother is your daughter's uncle
Your brother's daughter has a daughter? That is a great niece.
thts really bad
This is the way it goes: Your fathers elder brother is YOUR Uncle,his grand daugher is YOUR first cousins daughter. So this grand daughter who is your first cousins daughter would be YOUR SECOND COUSIN.
Your brother's daughter and your daughter are first cousins to each other. Your brother's daughter and your daughter's daughter (your granddaughter) are first cousins, once removed, to each other.
Your brother's daughter is your niece. Her daughter is your great niece.
Your brother or sister's daughter is called 'your niece.'
Your brother's sister is your daughter's aunt, and your daughter is your brother's, and his sister's, niece.
your brother's daughter is you niece