The child of your first cousin, once removed, is your first cousin, twice removed.
Your first cousin's child is your first cousin once removed.
first cousin twice removed
The child of your first cousin, once removed, is your first cousin, twice removed, or is your second cousin, depending.
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's child's child (your first cousin's grandchild) is yopur first cousin twice removed.
The child of your first cousin, once removed, is your first cousin, twice removed, if your first cousin once removed is the child of your first cousin. If your first cousin once removed in the first cousin of one of your parents, the child is your second cousin.
Your first cousin's child is your first cousin, once removed. Your second cousin's child is your second cousin, once removed. Your third cousin's child is your third cousin, once removed. Your relationship to the children of cousins who are once, twice, or more removed is more complex and depends on whether you or the removed cousin are in the older generation.
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 cousins child is your first cousin once removed.
Your first-cousin and your child are first cousins, once 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.
If your first cousin once removed is your parent's first cousin, then your first cousin once removed is your child's first cousin twice removed.If your first cousin once removed is the child of your first cousin, then your first cousin once removed is your child's second cousin.