Later on, the Matsui clan developed and branched off into some lineages with Yamashiro Province being its base, and Yasuyuki MATSUI (busho (Japanese military commander)) and Yukan MATSUI (Sakai bugyo (Magistrate of around Sakai)) appeared in succession during the Muromachi Period.
松井氏はこの後、山城国を中心に発展分岐し、室町期松井康之(武将)・松井友閑(堺奉行)等を輩出した。