Conversation so far:
Was Melissa Gilbert ever married?
actor Bo Brinkman, a cousin of actors Randy Quaid and Dennis Quaid.
The couple married.
When did they marry?
February 22, 1988.
Did they have any children?
she gave birth to son Dakota Paul Brinkman.

Question: Was he their only child?
Self-contained rewrite: Was Dakota Paul Brinkman the only child of Bo and Melissa?