I spent some time in one of those castles in Japan as a kid - my strongest memory of the movie is that the footage was reversed - they kept saying they were in the castle of X, when it was clearly the castle of his archenemy, Y.
Sorry, I forget the names. I just remember the confusion.
The one in the frumpy housecoat...
The haole. Anginsan. The Pilot. The English sea captain.
I've figured it for years but still love his acting. I could watch Shogun over and over. He shows up on public service ads occasionally here (Hawaii). Lives over on the leeward shore, sort of the Rio Linda of Oahu, though I imagine his digs are a bit pricier than the majority of those with cars up on blocks.