Mystery Solved

My Kitty-chan is indeed not of Inuyama, but of Mito, Ibaraki Prefecture (NOT near here).
She is the feline reincarnation of Mito Koumon, an Edo-period daimyo and compiler of historical works. And center of an extremely long-running (36 seasons) TV show of the same name.

Now you know.

Special thanks to Aya-sensei for her clarification.