So, I married my grandson (a breton) who didn't stand to inherit anything to an orc woman. Shortly after the marriage, he leaves my court for his brother's court and is married to some randomly generated Breton girl. The orc is now married to some random other lord. Neither have any history of the original marriage. I didn't get any event informing me about it or have any idea what really happened there. Can anyone tell me what exactly happened here?