Julia Quinn was likely inspired by the rich tapestry of the Regency era when creating Charlotte Bridgerton. The era was known for its strict social etiquette, and Charlotte's character can be seen as a way to explore how a young woman in that society would handle various situations. For instance, her relationships within the family and with potential suitors are shaped by the social norms of the time. Also, the opulence and the cultural aspects of the Regency era, such as the fashion and the importance of social gatherings, are reflected in Charlotte's character. By creating her, the author was able to tell a story that is not only about love but also about a woman's place in a complex and stratified society.