When Tadamichi had become head of the Fujiwara clan, the situation was somewhat adverse in that the Sekkan seiji (regency politics) had lost its viability, he was in conflict with his father and brother, and he did not produce a son to be his heir until much later.
忠通が藤氏長者となった時は既に摂関政治は形骸化し、さらに父や弟との対立を抱え、男子を設けるのも遅い方であったが、