In addition, due to the fact that Iemitsu's birthday was on the 17th, the same day as the anniversary of Ieyasu's death, it is thought that Iemitsu was even more conscious of a debt of gratitude for Ieyasu than either of his parents.
これらに加え、家康の命日と家光の生誕日が17日と一致していることなどが、父秀忠よりも祖父家康の恩を意識していたと考えられている。