Iemitsu, who was Ieyasu's grandson and the third Tokugawa shogun (1603 1651), undertook the building of Toshogu.
Ieyasu's grandson was named Lemitsu.
mnli hypothesis: Ieyasu's grandson was named Lemitsu. premise: Iemitsu, who was Ieyasu's grandson and the third Tokugawa shogun (1603 1651), undertook the building of Toshogu.