Your children and your first cousin are first cousins, once removed, to each other.
Your cousin's cousin is no relation to you.
Your mother's first cousin is your first cousin, once removed.
Your mother's first cousin is your first cousin once removed.
Your mother's first cousin is your first cousin, once removed
The child of your first cousin is your first cousin, once removed.
The wife of your first cousin is not related to you.
Your Aunt's first cousin may be your second cousin, onve removed or may be no relation to you at all.
Your Aunt's first cousin may be your second cousin, onve removed or may be no relation to you at all.
Cousin once removed.
Either your second cousin or your cousin in-law
Your daughter and your first cousin are first cousins, once removed.
Your grandfather's first cousin is your first cousin, twice removed. His second cousin is your second cousin, twice removed.