Claim: Some of Ryukyuan missions to Edo in Tokugawa Iemitsu - was the third shōgun of the Tokugawa dynasty (Gratitude 1649) and Tokugawa Ieharu (Congratulation 1780).
Evidence: Ryūkyūan Missions to Edo Congratulation Tokugawa Ienari Congratulation Tokugawa Ieharu