Conversation so far:
When was Billy Cannon born?
William Abb Cannon was born August 2, 1937 in Philadelphia, Mississippi.
Did Billy Cannon have any children?
Billy Cannon and Dot Dupuy had five children together.
Who did Billy Cannon have children with?
Billy Cannon had children with Dot Dupuy.

Question: When did Cannon marry Dupuy?
Self-contained rewrite: When did Billy Cannon marry Dot Dupuy?