I know that is two years late. Hoping that you are still surfing this site.
My aunt was Shigeko and she was married to Yoshie Izumi. They had two sons, (not sure of spelling) Chiheido and Tomaki. I believe she had 2 brothers and 2 sisters (maybe 3), my mom Tomiko being one of them. Her mothers name was Keiko.
Hope to hear from you soon.