According to "Ichiwa Ichigen" (a book of essays written by Nanpo OTA in the late Edo period), the oldest Geba-hi (a monument with inscription of Geba) was put up in Takao by Gon-dai-sozu Eiyu (Junior Prelate Eiyu) in 1301.
「一話一言」によれば、正安3年、権大僧都永瑜が建てた高雄の下馬碑が最古であるという。