Conversation so far:
When was Charles Willson Peale married?
In 1762, Charles Willson Peale married.
Who was Charles Willson Peale married to?
In 1762, Peale married Rachel Brewer (1744–1790).

Question: How many children did they have?
Self-contained rewrite: How many children did Charles Willson Peale have with Rachel Brewer?