After that, in the Shocho and Eikyo eras, a direct descendant called 'Saemon-no-suke-nyudo ISHIBASHI' was living in Kyoto, while, as "Mansai Jugo Nikki" (Mansai's diary) states '奥篠河殿、並伊達蘆名白河懸田川俣塩松石橋也' (Lord Sasagawa and Date, Ashina, Shirakawa, Kakeda, Kawamata, Shionomatsu, Ishibashi), a branch family of the Ishibashi clan surnamed Shionomatsu was living in eastern Adachi County.
その後正長・永享期には嫡流と思しき「石橋左衛門佐入道」が在京すると共に、正長元年（1428年）の『満済准后日記』に「奥篠河殿、並伊達蘆名白河懸田川俣塩松石橋也」と登場し、安達郡東方を分郡に塩松を名字とする庶流を分出していた。