Therefore, Hidetada whose mother came from an important family in Mikawa Province was treated as the substantial heir and appointed to Chunagon (vice-councilor of state) at the age of 14 and called the Edo Chunagon.
従って、母親が三河の名家である秀忠が実質的な世子として処遇されて14歳で中納言に任官し、江戸中納言と呼ばれる。