Toshiie protected Ukon TAKAYAMA who lost the Akashi domain (Takatsuki-jo Castle) of Harima Province by the Ban of Christianity enacted by Hideyoshi, and thought highly of Ukon who had abundant knowledge about the methods of castle construction and the science, so Toshiie offered him a residence and the roku (stipend) of 30,000 koku.
利家は秀吉の禁教令により、播磨国の明石領(高槻城)を失ったキリシタン大名の高山右近を庇護し、築城術や科学の知識豊かな右近を高く評価し、屋敷や3万石の禄を与えたりなどをしている。