The TVTropes Trope Finder is where you can come to ask questions like "Do we have this one?" and "What's the trope about...?" Trying to rediscover a long lost show or other medium but need a little help? Head to Media Finder and try your luck there. Want to propose a new trope? You should be over at You Know, That Thing Where.
Sounds like the marriage version of Scarpia Ultimatum.
EDIT: On further reading... not quite.
Edited by TriggerLoaded Don't take life too seriously. It's only a temporary situation.
Yeah, that's closely related, especially since the examples for Scarpia Ultimatum seem to turn it into any attempt to coerce someone into sex without directly threatening them. Even so, though, that doesn't quite cover it, since there's also the version where the villain just kidnaps his bride, or conspires with her parents to force the marriage on her, or whatever.
I'm tempted to just go ahead and make the article, except for one thing - the only name I can think of is "Exquisite Bride Obsession", which is a game mechanic in the tabletop game Exalted that encourages certain villains to do this. It exactly describes the trope, and it's not totally unclear even if you don't know Exalted, but I'm not sure it's the best name. Worth taking it to YKTTW or no?
Looking through the Marriage and Wedding tropes, I can't find anything dealing with a marriage to further a villainous goal.
Though, admittedly, it seems like it could be another category in Arranged Marriage, as there is one article about forced marriage in there. Not quite the way you were talking, though.
Don't take life too seriously. It's only a temporary situation.
Hmm, thanks, I hadn't seen that. You're right, though - the kind of forced-to-marry-the-villain marriage mentioned there is at most just a subtrope of what I'm talking about.
Okay, I really can't imagine this doesn't exist, but I didn't see it in any of the relevant categories I could think of. Is there a specific trope for the "Mwahaha! I'll force the princess to marry me!" plot? Like what happens in The Princess Bride or Robin Hood: Prince of Thieves?
It's often (but not always) a subtrope of Abduction Is Love, but neither the name nor the description for that trope mention marriage. It can also be a subtrope of I Have You Now, My Pretty, but where that article mentions forced marriage, the link goes to Shotgun Wedding, which is about a couple being forced to marry by relatives because the bride is pregnant. Arranged Marriage is mostly about the real-world kind of arranged marriage where the marriage is just set up by the couple's parents.