So... Nobutada was the one dying at Nijō Castle during the Honnō-ji Incident. And this here is Nobukatsu. What I can recall about him is that he's the one Hideyoshi supported, while Katsuie supported Nobutaka.
If this manga does go that far, I suppose Ken will eventually become Nobukatsu's chef too, all the way to Komaki-Nagakute.