Harumichi was the head of the main Hatano clan and Hideharu should have simply taken it over, but somehow Hideharu became an adopted child of his uncle Motohide HATANO before taking over his father's position.
晴通は波多野氏本家の当主であり、秀治はその後を相続したはずと考えられるのだが、なぜか一族の伯父である波多野元秀の養子となった上で家督を継いでいる。