Of course
Two counties, Leeds and Hull. My direct liege the King of England. He created a Duchy at the start of the game, and gave it to his heir. So that's good I suppose. I decided to go for the Business focus, mostly because I didn't know what it did and figured it sounded interesting. Turns out it gave me lots of money and made Hull the most prosperous province in England (59.7 tax income to London's 55.1.) So that was nice! I also made a large garden and friends with a Finnish Chief, so that was all good.
I got my son married off and promptly ended up seducing his wife, my daughter in law, impregnating her twice! He challenged me to a duel over it but I was like 'nah, you're good' after seeing his personal combat score, then continued the affair. Good to be the Earl.
The County of Yorkdale was where the real action was though. I tried all game to fabricate a claim on it, but while waiting on that I decided to have some fun with the Yorkdale family. I plotted to kill the head, and had him ambushed by bandits. That was one. Though as my involvement with the plot became known, his son was rather pissed at me. So I launched a rivalry war against him, crushed his armies and imprisoned him. (My liege was like 'cut that war out', but I had a favour with him and was like 'nah') I realised he couldn't pay the ransom, so I had him put on the rack instead. He took this badly, and upon being released he challenged me to a duel. Which I accepted this time, given he was at -25 combat score. I won, of course, and had the option to kill him or take his leg off. I chose the latter, though he died shortly afterwards anyway.
So now his son, all of age 4, was in charge, and pissed at me too for some reason. I couldn't have that, so plotted to kill him. It took 3 years, but when he turned 7 and went out hunting for the first time, he didn't come back. I then had the next two in line thrown off the castle walls. 5 family members down, only one left, Countess Eadhburh. Same plot, same plotters, but noooo, this time she dodged the assassin (maybe planning to throw a third child off the castle walls wasn't the smartest idea?). So annoying.
I changed tactics, trying to get the Pope to grant me a claim on her lands, sending him the Finger of St John. But in in the time it took me to deliver it, Countess Eadhburh gained the 'charitable' trait, which nullified the relation boost from giving the Pope the Finger. Grrh.
Thankfully, shortly afterwards I managed to fabricate a claim. I launched my armies at the province, quickly taking it and giving it to my eldest son. Who hates me for some reason. Anyway, I killed 5 of Countess Eadhburh's family members (she's the only surviving member) then took her county. I fully expect her to train to be a master assassin and come after me.
Also, most importantly, I'm a goddamn silver fox.