Your daughter's son's son is your great grandson.
Your daughter and your sister's son are first cousins.
Your great grandson and your sister's son are first cousins, twice removed.
Your great grandson and your sister's great grandchild are third cousins.
Your sister's son is your nephew His sons are your grandnephews, and his daughters are your grandnieces.
Your sister's son is your nephew His sons are your grandnephews, and his daughters are your grandnieces.
YesThe son and his sister = 1 son, 1 sisterThe sons and their sister = many sons, 1 sisterThe son and his sisters = 1 son, many sistersThe sons and their sisters = many sons, many sistersThough in reality this is a strange way to say it. More normal would be "The sons and daughters".
Wat the heck in this question yaar? its maternal uncle. you are uncle your son is first cousin to your sisters his aunt sons or daugters a : a child of one's uncle or aunt b : a relative descended from one's grandparent or more remote ancestor by two or more steps are cousins and when those sons and daughters have kids they become second cousins etc.
No, because my father's sister (my aunt) does not have any sons, she only had daughters.
Your granddaughter and your sister's grandson are second cousins.
Yes, she did. She had the relationship of a mother that a mother has with her son. As most mothers do.
Grand-Nephew
Your son and your nephew are first cousins to each other. Their daughters are second cousins to each other.
My sister's son is my nephew.
cousin
He had 4 daughters and 1 son john Rockefeller jr.