Conversation so far:
Was Memphis Minnie married?
Memphis Minnie was married three times, although no marriage certificates have been found.
Who was Memphis Minnie's first husband?
Memphis Minnie's first husband was Casey Bill Weldon.
Did Memphis Minnie and Casey Bill Weldon have any children?
Did Memphis Minnie have children by either of her other husbands?
What other family members does Memphis Minnie have?
Memphis Minnie has a sister named Daisy Johnson.
Was Memphis Minnie close to her sister Daisy Johnson?

Question: Why did her first marriage not work out?
Self-contained rewrite: Why did Memphis Minnie first marriage not work out?