Your uncle's child is your first cousin. His grandchild is your first cousin, once removed.
You are also that grandchild's first cousin, once removed.
Your maternal uncle is your mother's brother. His child is your first cousin. His granddaughter is your first cousin, once removed.
Second cousins.
The grandchildren would be the parents, aunts and uncles, and first cousins once removed, of the great grandchildren.
your uncles daughter would be your cousin
Your uncle's grandchild would be your second cousin because his grown son or daughter would be your first cousin.
Your great uncle's grandchild is your second cousin.
second cousin
not to be complicated , but if you have an uncle--> he has a nephew--> as you can see that's not complicated . And if you ask what is a uncles NEPHEW related to an uncles grandfather. in what way ....i would say the nephew is is the great gandfathers great grandson.
Your great grandmother's sister is your great great aunt. Her great grandchild is your third cousin.
The grandchild of your grandmother's first cousin is your third cousin. The grandchild of your grandmother's second cousin is your fourth cousin. The grandchild of your grandmother's third cousin is your fifth cousin.
He would be his great great great uncle
Your father's first cousin's grandchild is your second cousin, once removed. Your father's second cousin's grandchild is your third cousin, once removed. Your father's third cousin's grandchild is your fourth cousin, once removed. And so forth.
second cousins twice removed.