Hi, there are 3 lord, Princess Linthradil, Princess Brigit and Queen Trisna you can marry. But the thing is, it varies from game to game. Some game they would start with a favor toward you, some game not. It's totally random and I think is tied to personality. Of course I will check the code and maybe find a way to let people marry them and other lady companions lords given the high relation.
On that note, I also inform you that there are 6 very powerful lords that starts with guaranteed castle fief, 1 for each faction. They are royalty tied and give more right to rule when married than normal lords/ladies. They also have the elite household troops. 3 male and 3 female lords. And you would be able to guess who they are because their title is different from other lords.
But like I said before, it all comes down to personality.
On that note, I also inform you that there are 6 very powerful lords that starts with guaranteed castle fief, 1 for each faction. They are royalty tied and give more right to rule when married than normal lords/ladies. They also have the elite household troops. 3 male and 3 female lords. And you would be able to guess who they are because their title is different from other lords.
But like I said before, it all comes down to personality.