Ursula, her mother

Susanne seems surprised by your request. "You want to marry my mother?"

You stop to consider her words. Marrying Ursula was not on the agenda since you actually plan to visit her quarter and satisfy your lust with her body. However, the question did indeed raise a new possibility.

Ursula is older than you, a widow and a mother of three. Dobra did remind you not to marry a widow, like herself. However, while Ursula is a widow, she has that noble lineage behinds her which will allow you to strengthen your seat of power. Plus, like Dobra, Ursula can still give you children.

There's an issue of convincing your mother to accept Ursula since she will feel weirded out by the fact that her son will be marrying her best friend whose almost around her age. However, in the grand scheme of thing, that's not really an issue.