A joshukaku daimyo was a daimyo whose residence in his hometown was a jinya, but who was treated like a joshu daimyo; which is an example of preferential treatment of a daimyo without a castle as joshu daimyo.
城主格大名とは国許の屋敷が陣屋である大名のうち、城主に準ずる待遇城主格大名の優遇例