According to "Meiryo-kohan historical records," because Shigetsuna's only son Toyotaka was too young, the information had been entrusted to the son-in-law Shigeuji YOSHIDA (Insai school so - founder of Insai school). However, it is said there was a quarrel because the manual was not returned to Toyotaka after he grew up.
『明良洪範』によれば、重綱の嫡子豊隆は幼少であったため、婿の吉田重氏（印西派祖）に伝書類が預けられていたが、豊隆成長後に返伝がなされず騒動になったという。