In the Battle of Mount Tsuhokami, his cousins Toshikane HARADA and Toshiie HARADA, also died in the battle; but there were few notes on it in the genealogy and it can be thought that it was because Iehira was in the position to take the reins of the Togo clan as the family head.
この合戦では従兄弟にあたる原田俊兼、原田俊家兄弟も討ち死にしているが系図の注記はわずかしかなく、家平が東郷氏一族を統率する立場にある人物であったことが考えられる。