*1638/2/28 [[Shimabara Rebellion]] comes to an end.
*1638/2/28 [[Shimabara Rebellion]] comes to an end.
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*1638/10 [[Shimazu clan]] retainers [[Ito Sukemasa|Itô Niemon Sukemasa]]<!--伊東仁右衛門祐昌-->, [[Hirata Munehiro]]<!--平田狩野介宗弘-->, and [[Karimata Noriyasu]]<!--狩俣為右衛門尉則康--> depart [[Kagoshima]] on a mission to the [[Ryukyu Kingdom|Ryûkyû Kingdom]], to announce that [[Shimazu Mitsuhisa]] has become lord of [[Satsuma han]], and to request the Ryukyuan king's formal letter of reply, and oath of loyalty.