It seems incredibly easy to find the titles and household servants you would find in Western castles. We're familiar with chancellors and castellans and seneschals and manservants.
What are some of the titles (preferably in romanji) that we could expect to see in a Japanese castle serving a daimyo?
Who ran the day to day operations of the castle for the lord? Did he have a host of advisers with actual titles, or were they simply samurai? Did he tend to have a chancellor or a seneschal? Who was the head servant and so forth?
Who ran the day to day operations of the castle for the lord?
The word "castle" seems to be the point of contention here. Many "castles" in Sengoku (Medieval) Japan weren't castles as we imagine them. They were essentially large fortifications called castles. I know castles are large fortifications but I mean that's all many were: forts. It is true that some men like Oda Nobunaga could afford actual castles but warlords that wealthy were relatively rare. In a time of constant war, not a lot of money goes toward gold trimmings.