Yes, there are quite a few. Some fanfictions might explore Margaery Tyrell's life if she were a part of the wizarding world in Harry Potter. You can find them on popular fanfiction websites like FanFiction.net or Archive of Our Own. Just search for 'Harry Potter Margaery Tyrell' and browse through the results.
One common theme is power. Margaery is known for her pursuit of power in Game of Thrones, and in the fanfiction set in the Harry Potter universe, she might be after power within the wizarding world, perhaps trying to gain influence in the Ministry of Magic. Another theme could be friendship. She could form unexpected friendships with characters from Harry Potter, like Hermione, who also values intelligence and strategy.
One possible plotline could be that Margaery Tyrell, with her political acumen from her own world, enters the wizarding world of Harry Potter and tries to bring some of her strategies to Hogwarts. Maybe she tries to reform the Hogwarts school system in a way similar to how she maneuvered in her own political setting in her original story.
One common theme is the clash of cultures. Since Harry is from the wizarding world of Harry Potter and Margaery is from the political world of 'Game of Thrones', their different ways of life often collide. For instance, in many fanfictions, Margaery has to adjust to the use of magic which is completely new to her.
I'm not sure specifically which 'Margaery Tyrell lemon fanfiction' is good. Fanfiction quality can vary greatly. You might try searching on well - known fanfiction websites and look at the reviews and ratings to find some that are popular and well - written.
Searching for this particular combination of 'Harry Potter and Margaery Tyrell' fanfiction could be a challenge. You might need to use very specific search terms. Another option is to ask in relevant fan communities on social media platforms. There are often groups dedicated to Harry Potter fanfiction or even more general fantasy fanfiction. Someone in those groups might be able to point you in the right direction.
One popular 'Harry Potter and Margaery Tyrell fanfiction' might be 'The Unlikely Alliance'. It explores a scenario where Margaery, with her political acumen from the 'Game of Thrones' world, teams up with Harry Potter in a magical adventure that combines the two universes in an interesting way.
In Margaery Tyrell lemon fanfiction, themes often revolve around her family's ambitions and how that impacts her relationships. Since the Tyrells are a powerful family, her relationships might be influenced by political intrigue. Also, her relationship with the Lannisters, especially Tommen, can be a central theme, with the added 'lemon' aspect perhaps exploring the more private and passionate sides of those relationships.
In a lemon fanfiction, there could be a lot of emotional and physical chemistry between them. Jon's rough exterior from his time in the Night's Watch and Margaery's soft yet strong - willed nature could create a really intense relationship. They might share secrets and dreams that no one else knows, and this new - found closeness could be the start of a journey that changes the fate of Westeros.
I'm not sure about specific lemon fanfictions as they often involve inappropriate content. However, if you're interested in regular fanfictions about Jon Snow and Margaery Tyrell, there are many on fanfiction.net that focus on their possible relationships, political alliances, and how they might interact within the complex world of Westeros.