Pada masa rezim Raja [[Amangkurat I]] dijumpai eksekusi banyak bangsawan karena kecurigaan atas pengkhianatan, termasuk seluruh keluarga [[Pangeran Pekik]] (mantan dinasti yang berkuasa dari [[Kadipaten Surabaya|Surabaya]]) pada tahun 1659 dan banyak anggota keluarga kerajaan di keraton selam tahun 1660-an.{{sfn|Pigeaud|1976|p=66}} Kebrutalan ini menyebabkanmenimbulkan Kajorankekhawatiran khawatirbagi Kajoran, yang mulai bersimpati dengan para rival raja.{{sfn|Pigeaud|1976|p=67}} When [[Trunajaya]], a Madurese nobleman who were forced to live at court after his country's annexation, fled the court, Raden Kajoran took him in Kajoran as protégé and let him marry one of his daughters.{{sfn|Pigeaud|1976|p=67}}{{sfn|Ricklefs|1993|p=31}} He also encouraged a friendship between Trunajaya and the Crown Prince of Mataram (Pangeran Adipati Anom, future [[Amangkurat II]]) who also had a grudge against his father the king.{{sfn|Pigeaud|1976|p=67}}
