The IHA-designated tomb of Prince Ichinobe-no-Oshiha at Koboshizuka in Ichinobe, Higashiomi, associated with the chronicles’ accounts of the prince and his sons, Emperors Kenzo and Ninken.
Finds & research
The cited public sources do not establish its burial facility or grave goods.
Two views on the occupant
Archaeological view
An officially designated tomb at Koboshizuka in Ichinobe, Higashiomi. Kokugakuin University’s mausoleum database describes its official form as a round mound. A published photograph and transcription of the on-site sign give the eastern mound a diameter of 15 m. The cited official sources do not firmly establish its date or burial structure. The attribution to the prince is an IHA designation, distinct from archaeological identification.
Imperial Household Agency view
Managed by the IHA as the Iwasaka Tomb of Prince Ichinobe-no-Oshiha, a son of Emperor Richu and the father of Emperors Kenzo and Ninken.
Field notes
Managed as an imperial tomb; follow on-site guidance when viewing it from outside.