Well, from the title, the virgin and her lover are obvious main characters. But it's also possible that there are antagonists in the story. Maybe there's a person who opposes the relationship between the virgin and her lover due to various reasons like social status or family honor. There could also be friends or confidants of the main characters that help shape the story and their decisions.
I'm not entirely sure without having read the book in detail, but presumably, the virgin herself would be a main character. And her lover, of course, would be another central figure. There may also be family members or figures of authority in the historical setting that play important roles.
One of the main themes could be love in the context of the historical period. It might explore how love was perceived and expressed during that time. Another theme could be the social and political situation, as historical fictions often use the backdrop of real historical events to add depth to the story.
Since I don't have access to the actual 'the virgin's lover fiction', it's difficult to determine the main character precisely. It could potentially be a complex character, not just the virgin or the lover. There might be other characters in the story that play important roles as well, like the virgin's family members or friends who influence the relationship between the virgin and her lover.
One possible theme could be love and innocence. Given the title, the virgin represents innocence and the relationship with the lover explores the theme of love in the context of that innocence.
I'm not sure specifically as the title doesn't directly tell us. But it's likely that the virgin and her lover are main characters. There might also be members of the Plantagenet and Tudor royal families or nobles, as they were important figures during those periods.
There are usually noblemen as well. They might be lords or knights. These male characters are often involved in the political and social machinations of the Tudor court while also being the love interests of the virgin characters. Their status and power play a role in the romantic relationships. For instance, a powerful duke might fall in love with a lower - ranking but beautiful virgin.
Thomas Cromwell is a central character. He is a shrewd and ambitious figure who rises through the ranks in Tudor England.
The main themes would probably include passion and secrecy. The relationship of the 'virgin's lover' would likely be passionate, given the nature of the topic. But it also had to be secret, as Tudor society was highly judgmental. Additionally, family and loyalty would be important. The lover might have to choose between loyalty to his family and his love for the virgin. And there could be a theme of sacrifice, where the lover has to sacrifice something - perhaps his own ambitions or status - for the sake of the relationship.
One of the best is 'Wolf Hall' by Hilary Mantel. It offers a vivid portrayal of Tudor England. Another great one is 'The Name of the Rose' by Umberto Eco, which combines historical setting with mystery in a medieval monastery. Also, 'Gone with the Wind' is a classic historical fiction that takes readers to the American South during the Civil War era.
The main character is often Rochester himself. He is typically depicted as a complex, often brooding man with a past.
The key features might include detailed descriptions of the era's social hierarchies. In the Plantagenet and Tudor times, class differences were very pronounced. Also, the novels may have strong female characters. Since there's a mention of 'the virgin', perhaps a female protagonist whose story is intertwined with the lover's in the context of that historical period.