Your grandson and your nephew are first cousins, once removed.
Your son and grandson may be father and son, or they may be uncle and nephew.
Umm, well they would just be related ?
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.
Yes, you are related to your brother-in-law's grandson. Your brother-in-law's grandson would be your nephew once removed. This means that you are not directly related by blood, but you share a family connection through your brother-in-law's family.
Your grandson and your great nephew are second cousins to each other.
You are your nephew's aunt/uncle,,, his children are your grandnieces/nephews,, his grandson is your great-grandnephew.
Their cousin, because your child is your nephew`s cousin, so your grandson or granddaughter is also your nephew`s cousin.
Their cousin, because your child is your nephew`s cousin, so your grandson or granddaughter is also your nephew`s cousin.
Your brother-in-law is your spouse's brother. His grandson s your spouce's great nephew. (Some people say grand nephew). That makes him your great nephew, too. Your brother-in-law could also be the husband of your sister. Then your brother-in-law's grandson is your sister's grandson and your great nephew.
Your grandson and great grand son could be cousins,(first cousins once removed), they could be uncle and nephew, or they could be father and son. It depends on how they are related to your children. If your great grandson is the grandchild on one of your children and your grandson is the child of a different one of your children, they are first cousins, once removed. If your great grandson is the child of a sibling of your grandson, then they are uncle and nephew. But your great grandson could also be the son of your grandson. Then they are father and son
Your niece's son is your great-nephew. Your niece's grandson is your great-great nephew.
Your father's great grandson could be your grandson, or your great nephew.