May 7, 1680, made successor to the shogun and on the same day, appointed Gon Dainagon (Provisional Chief Councilor of State) with the rank of Junii Gon Dainagon (Junior Second Rank, Provisional Chief Councilor of State).
1680年（延宝8年）　5月7日、将軍後継者となり、同日、従二位権大納言。