The death of Queen Charlotte's parents is a formative moment in the Bridgerton prequel, but Queen Charlotte: A Bridgerton Story actually changed some important aspects of history. Neither Bridgerton nor its first spin-off are noted for their historical accuracy. While some aspects of Regency life are faithfully recreated, both shows understandably prioritize storytelling over total authenticity. However, even with these caveats, it's notable that Queen Charlotte set out to change some notable aspects of the titular monarch's background.

https://screenrant.com/what-happened-to-queen-charlottes-parents/