Sô Yoshiaya was daimyô of Tsushima han from 1838 to 1842. His wife, Jihôin, was the daughter of a Môri clan daimyô of Chôshû.
Yoshiaya was succeeded as Lord of Tsushima by Sô Yoshiyori.
References
- Robert Hellyer, Defining Engagement, Harvard University Press (2009), 211.