Saikashu can be considered to be a group of believers of the Jodo Shinshu sect (the True Pure Land Sect of Buddhism) as its members, including Shigehide SUZUKI and Morishige TSUCHIBASHI, were besieged in Ishiyama Gobo (Ishiyama Hongan-ji Temple).
雑賀衆は鈴木重秀や土橋守重を始め、石山御坊などに籠城しているところから、浄土真宗門徒と考えられる。