Ishitobi 【石飛】5 The Japanese surnames etymology dictionary.
② Ishikawa-ken Kanazawa-shi Originated from Isobe Town (formerly Isobe Village). Isobe is a place name with a record since the Muromachi Period. From "Iso" and "Village" of "Isobamura" that I called in the Edo period. It is distributed in the same place.