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).
How many children did Charles Willson Peale have with Rachel Brewer?
In 1762, Peale married Rachel Brewer (1744–1790), who bore him ten children, most named for Peale's favorite artists, male and female.
What did Charles Willson Peale do once his wife passed away?
After Rachel Brewer's death in 1790, Charles Willson Peale married Elizabeth de Peyster, a descendant of Johannes de Peyster, the next year.
Did Charles Willson Peale and his second wife Elizabeth de Peyster have any children?
With his second wife, Charles Willson Peale had six additional children.
When were Charles Willson Peale and his third wife Hannah More married?
Hannah More, a Quaker from Philadelphia, married Charles Willson Peale in 1804, becoming his third wife.

Question: How long were they married?
Self-contained rewrite: How long were Hannah More and Charles Willson Peale married?