Conversation so far:
When was The Mamas and the Papas formed?
1965
How was The Mamas and the Papas formed?
The Mamas and the Papas was formed by husband and wife John Phillips (formerly of the New Journeymen) and Michelle Phillips, and Denny Doherty (formerly of the Mugwumps).

Question: How did they choose the name?
Self-contained rewrite: How did The Mamas and the Papas choose the name?