What relationship would this be, if any? My father's cousin's cousin'

Question:The common ancestor of your father to his cousin would be your father's grandparents.

If "non-shared side" means for example your father's cousin has a cousin from grandparents NOT your father's grandparents, but from their second set of grandparents, then there is NO RELATIONSHIP. In order to have a relationship, there must be a common ancestor. In this case, there isn't. Therefore that cousin's son would also have no relationship since his parents had no relationship.

Best Answer - Chosen by Asker: The common ancestor of your father to his cousin would be your father's grandparents.

If "non-shared side" means for example your father's cousin has a cousin from grandparents NOT your father's grandparents, but from their second set of grandparents, then there is NO RELATIONSHIP. In order to have a relationship, there must be a common ancestor. In this case, there isn't. Therefore that cousin's son would also have no relationship since his parents had no relationship.

Paternal cousin, thrice removed.

there is no relationship

I think Mind Bender has hinted that your question is not exactly clear about non shared side.

You are only related to someone if you have a common ancestor.