Complex sentence: After the wedding, Louis wanted to consummate the marriage as quickly as possible, and the new queen's mother-in-law (and aunt) arranged a private consummation instead of the public one that was the custom.
Split into simpler sentences: After the wedding, Louis wanted to consummate the marriage as quickly as possible. The new queen's mother-in-law (and aunt) arranged a private consummation instead of the public one that was the custom.