Their teacher, Atsutane often told his students 'the plans of the gods are unforeseen', however, presumably, he really hadn't been able to foresee that his student Atsuma MIDORIKAWA from Iyo Province would get married to his daughter Oteu (her real name was Chieko) and later change his name to Daigaku HIRATA after being adopted into the Hirata family, and become the successor to his family.
「神のお計らいは不測である」とは篤胤が弟子達に常々申し述べていたことではあるが、伊予出身の碧川篤眞が入門から二年後に平田大角と改称し、娘お長（千枝子）の婿養子になり平田家の跡目を継ぐようになるとは、さすがの彼も予見できなかったようである。