However, his legitimate son Nobutake was in Osaka-jo Castle as a page to Hideyori TOYOTOMI, and when the western army was devastated, Nobutake returned to his province, bringing along Mitsunari's child Shigenari ISHIDA and others.
しかし、嫡男の信建は豊臣秀頼の小姓衆として大坂城にあり、西軍が壊滅すると三成の子石田重成らを連れて帰国している。