I thought the Dawn currently allowed marriages and made this an exception to their chastity thing? Also I am not necessarily talking about the most prestigious damsels of the realm. Of course it will be harder to court them. But the daughters of little barons, or common knights could theoretically also be courted, so I don't think it would be a problem to find suitable candidates. Anyway, I was just curious whether that would be a thing that players would want to spent time and energy in.