I was wondering: what happened to Crassus' vast holdings after his death at Carrhae? I understand that his son died at Carrhae, but he was survived by his daughter. How did Roman inheritance laws work, and was it any different in Crassus' case?
It was likely inherited by his younger son Marcus Licinius Crassus. He don't know a lot about this Marcus Licinius Crassus, except that he apparently survived the civil wars, and was made Pontifex.
His son, also Marcus Licinius Crassus, was nicknamed Dives (or the rich) as was his adopted son... also named Marcus Licinius Crassus. So it appears that the family wealth survived at least three more generations.
Here's /u/kiao's response for when this question was asked 2 years ago, it gives a pretty good explanation. Check it out.