Complex sentence: At his marriage in 1677, André-Charles Boulle gave his birth date as 11 November 1642 but no document exists to corroborate this date, which is unusual for a Bourgeois from a wealthy Protestant background.
Split into simpler sentences: At his marriage in 1677, André-Charles Boulle gave his birth date as 11 November 1642 but no document exists to corroborate this date. This is unusual for a Bourgeois from a wealthy Protestant background.