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.
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.
The child of your first cousin is your first cousin once removed, and you are first cousin once removed to that child.
Your first cousin's child is your first cousin once removed.
Your 1st cousin's child is your 1st cousin once removed. Your 2nd cousin's child is your 2nd cousin once removed. And so on...
Your first cousin's child is your first cousin once removed. Your children and that child will be second cousins to each other. This poster above is incorrect. If you have the same grandparents as someone on either side, they are your first cousins. Your first cousins once removed would be if your great-grandparents were someone else's grandparents. Your second cousins are if you have the same great grandparents as someone. etc.
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. Your second cousin's child is your second cousin, once removed.
Your first cousin's child is your first cousin's, 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 cousin's brother is also your cousin. His child is your cousin once removed. For example, if your first cousin has a child, that child is your first cousin, once removed. If your third cousin has a child, the child is your third cousin, once removed.
Your first cousin's child is your first cousin once removed. Your second cousin's child is your second cousin, once removed.
They are still a First Cousin once removed.
The child of your first cousin, once removed, is your first cousin, twice removed, or is your second cousin, depending.