The child of your father's first cousin would be your first cousin, once removed. Then when that person has a child, their child will be your first cousin, three times removed. A second cousin is the children of first cousins. For example, your child and your cousin's child are second cousins. Then their children will be second cousins, once removed to each other.
Your first cousin's child is your first cousin once removed.
You are his first cousin.
The child of your father's first cousin is your second cousin.
first cousin twice removed
She is your first cousin, once removed, because your father's brother is your uncle, your uncle's son is your first cousin and your first cousin's daughter is your first cousin, once removed. She and your child will be second cousins to each other.
The child of your first cousin is your first cousin, once removed.Your child and the child of your first cousin are second cousins to each other.
The child of your first cousin, once removed, is your first cousin, twice removed.
Your child and your first cousin's child are second cousins. Your child and your second cousin's child are third cousins to each other.
The relationship between your sister's (or brother's) child and your cousin is the same as the relationship between your child and your cousin. Your child and your first cousin are first cousins, once removed. Your child and your second cousin are second cousins, once removed, and so forth.
Your first-cousin and your child are first cousins, once removed.
The child of your first cousin, once removed, is your first cousin, twice removed, or is your second cousin, depending.
Your son and your 1st cousin's child are 2nd cousins.