Also while there were constant conflicts inside the Ogasawara clan, Masayasu OGASAWARA (a younger brother of Nagahide) of the Shinano-Ogasawara clan, who had support from bakufu, almost established control temporally at one time, but in 1441 after Shogun Yoshinori ASHIKAGA was murdered at Kakitsu War and Masayasu who lost the support died, the Shinano-Ogasawara clan had an internal conflict again among a three party - a son of Nagahide, Mochinaga OGASAWARA (Fuchu family) and a son of Masayasu, Muneyasu OGASAWARA and Mitsuyasu OGASAWARA (Matsuo family) - and furthermore the Matsuo family had a conflict splitting into three including the line of Muneyasu (Suzuoka family) and the line of Mitsuyasu (Matsuo family).
また、小笠原氏の内部においても内紛が絶えず、幕府の後ろ盾を得た信濃小笠原氏の小笠原政康（長秀の弟）が一時支配権を確立しそうになったが、嘉吉元年（1441年）の嘉吉の乱で将軍足利義教が暗殺され、後ろ盾を失った政康が死去すると、信濃小笠原氏は長秀の子の小笠原持長（府中家）と政康の子の小笠原宗康、小笠原光康（松尾家）との間で内紛が再発し、さらに松尾家は宗康の系統（鈴岡家）と光康の系統（松尾家）に分裂、三家に分かれて抗争することとなる。