Yamashiro Province was home to Heian-kyo (the ancient capital of Japan in current Kyoto), where there was a rule that Yamashiro no suke, together with Kura no suke (Deputy chief of Kuraryo, Bureau of Palace Storehouses), had to take part in the parade in the Kamo Festival ("Kanshoku-nangi"(book of government posts and criticism).
山城国は平安京（京都）の所在地であり、山城介は内蔵助とともに賀茂祭の行列に必ず随従する決まりがあった（『官職難儀』）。