Mrs Smiths
The child of your mother's first cousin is your second cousin. The child of you mother's second cousin is your third cousin.
Your mother's first cousin is your first cousin, once removed. Your mother's second cousin is your second cousins, once removed. Your mother's third cousin is your third cousin, once removed. The potential relationships become more complex if your are talking about your mothers cousins once, twice or more removed.
The children of your mother's first cousins are your second cousins. The children of your mother's second cousins are your third cousins. The children of your mother's third cousins are your fourth cousins. And so forth.
Sally
Cassandra Delaney was John's second wife, mother of his third child Jesse Belle.
Your child and your second cousin's child are third cousins to each other.
AnswerSince they would also be cousins, call them by their first name. AnswerYour children and your first cousin are first cousins, once removed. Your children and your second cousin are second cousins, once removed.
After your second
Your dad's second cousin's child is your third cousin.
Your first cousin's child and your child are second cosins. Your first cousin's grandshild and your child are second cousins, once removed. Your second cousin's child and your child are third cousins. Your second cousin's grandchild and your child are third cousins, once removed.
She only had three children, so the third one is Johnny!
Your second cousin's child is your second cousin, once removed. Your second cousin's child and your child are third cousins to each other.