I posted replies to previous messages but the e-mail addresses were invalid (it has been a long time since they were written.) My mother-in-law was a Matsuki but her mom was Tomoe Takahasi. I don't know much more than her maternal grandparents were Keitaro and Hiro Takahashi. Tomoe's siblings were Denkichi, Hanae, Mansaku, and Tokutaro. Im searching too so if anyone can help, I would very much appreciate it.