Spoiler alert: Spoilers for Bridgerton Season 4 follow. Bridgerton simply wouldn’t be Bridgerton if the subplots weren’t as good as the primary love story. So what’s the deal between Francesca and Michaela, and what will come of their relationship? In the book, Francesca is introduced to Michael Kilmartin, the cousin of her soon-to-be-husband, just days before her wedding to John. Shortly after the two are married, Lord Kilmartin tragically dies from a cerebral aneurysm and Francesca suffers a miscarriage.