Amabe Clan Genealogy: Japan's Oldest National Treasure Family Record

Hidden within the sacred precincts of Kono Shrine, near the breathtaking Amanohashidate sandbar in northern Kyoto Prefecture, lies one of Japan's most extraordinary historical documents. The Amabe Clan Genealogy (海部氏系図, Amabe-shi Keizu) is a National Treasure that preserves the lineage of an ancient seafaring clan stretching back to the age of the gods. Dating from the 9th century, it is recognized as one of the oldest surviving family genealogies in all of Japan—a remarkable window into the ancient clan systems, Shinto priesthood, and maritime culture that shaped the nation's early history.

What Is the Amabe Clan Genealogy?

The Amabe Clan Genealogy is a set of two genealogical scrolls that have been handed down through the Amabe clan, the hereditary priestly family of Kono Shrine in Miyazu City, Kyoto Prefecture. The two documents are:

• The Main Genealogy (籠名神社祝部氏係図, Kono Myōjin-sha Hafuri-be-shi Keizu) — A concise vertical genealogy listing the direct line of descent from the mythical ancestor Amenohoakari no Mikoto to the 32nd generation head of the clan. This is the older of the two scrolls, with its writing dated to the second half of the 9th century (the Jōgan era, 859–877).
• The Annotated Genealogy (籠名神宮祝部丹波国造海部直等氏之本記, commonly called the Kanchū Keizu) — A more detailed version compiled during the Ninna era (885–889), providing extensive annotations, sibling branches, and historical notes not found in any other ancient record. The surviving copy dates to the early Edo period.

Together, these scrolls form a priceless record of an unbroken priestly lineage that continues to this day—the Amabe family still serves as the chief priests of Kono Shrine, now in their 82nd generation.

Why Was It Designated a National Treasure?

The Amabe Clan Genealogy was first designated an Important Cultural Property in June 1975, and just one year later, in June 1976, it was elevated to the prestigious status of National Treasure. Several factors make this document exceptionally valuable:

• Antiquity: The Main Genealogy is the second-oldest surviving clan genealogy in Japan, surpassed only by the Enchin genealogy (a National Treasure associated with the Wake clan). Its vertical format (tate keizu) preserves the most ancient style of Japanese genealogical recording.
• Physical form: The Main Genealogy is a handscroll measuring 25.7 cm in width and 228.5 cm in length, made of five sheets of kōzo (mulberry bark) paper joined together. A single pale ink line runs down the center, with the names of gods and clan heads inscribed along it. Twenty-eight impressions of the official seal of Tango Province are stamped upon it, proving it was submitted to and approved by the provincial government.
• Historical significance: The genealogy records not only the Amabe clan's own history but also preserves traditions about ancient regional clans that are not found in the Kojiki, Nihon Shoki, or any other national chronicle. It provides invaluable insights into the ancient clan system, the evolution of Shinto priesthood, and the transition from maritime clan leadership to shrine service.
• Unique content: The Annotated Genealogy contains references to figures who may correspond to legendary personages such as Himiko (the shamaness-queen of Yamatai), making it a subject of ongoing scholarly debate and fascination.

The Amabe Clan: Seafarers Turned Shrine Priests

The Amabe clan were originally a powerful maritime people—the "sea folk" (ama or kaibe) of ancient Japan. Based along the coasts of the Tango Peninsula, they were skilled navigators, fishermen, and traders who maintained connections across the Sea of Japan and even to the Asian continent. Their name literally means "sea division," reflecting their role as administrators of seafaring communities under the ancient Yamato court.

Over the centuries, the clan transitioned from provincial governors (kuni no miyatsuko) of Tanba Province to hereditary priests (hafuri) at Kono Shrine. The genealogy beautifully documents this transformation across three distinct eras: the mythological age of divine ancestors, the period of clan leadership over maritime communities, and the era of dedicated shrine priesthood that continues to this day.

Kono Shrine: The "Birthplace of Ise"

The Amabe Clan Genealogy cannot be fully appreciated without understanding its home—Kono Shrine (籠神社), one of the most historically significant Shinto shrines in Japan. Known as "Moto-Ise" (the "Original Ise"), Kono Shrine is believed to be the place where the deities Amaterasu Ōmikami and Toyouke Ōmikami were enshrined before they were transferred to the Ise Grand Shrine in Mie Prefecture.

Standing at the northern end of Amanohashidate—one of Japan's celebrated Three Scenic Views—the shrine's main hall is built in the same shinmei-zukuri architectural style as the Ise Grand Shrine. It is one of only two shrines in Japan permitted to display the sacred five-colored jewels (goshiki no suedama) on its balustrades, a mark of its extraordinary spiritual authority.

In addition to the Amabe Clan Genealogy, Kono Shrine treasures a pair of ancient bronze mirrors, stone komainu guardian dogs (Important Cultural Property), and a wooden votive tablet attributed to the celebrated Heian-era calligrapher Fujiwara no Sukemasa (also an Important Cultural Property).

Highlights and Points of Interest for Visitors

While the original Amabe Clan Genealogy scrolls are kept in careful conservation and not regularly displayed to the public, there are several ways to engage with this remarkable heritage:

• Kono Shrine: Visit the shrine itself to experience the sacred atmosphere where the Amabe clan has served for over a millennium. The shrine grounds include the main hall, a beautiful water garden with a suikinkutsu (water chime), and informative displays about the shrine's history.
• Manai Shrine (Okumiya): A 10-minute walk from Kono Shrine leads to its rear shrine, Manai Shrine, the original sacred site where Toyouke Ōmikami was believed to reside. Here you can see ancient sacred stones (iwakura) and the Manai sacred spring—a truly atmospheric place steeped in primal spirituality.
• Furusato Museum Tango (Kyoto Prefectural Tango Historical Museum): This museum, located nearby on the site of the Tango Provincial Temple ruins, has previously exhibited reproductions of the Amabe Clan Genealogy. Please note that the museum is currently closed for renovation and is expected to reopen around late March 2027.
• Amanohashidate: The legendary sandbar, stretching 3.6 km across Miyazu Bay, was traditionally considered the approach path to Kono Shrine. Viewing it from the Kasamatsu Park hilltop above the shrine is an unforgettable experience.

Nearby Attractions

The area around Kono Shrine and Amanohashidate offers a wealth of cultural and natural experiences for visitors:

• Amanohashidate Viewland and Kasamatsu Park: Two hilltop observation points offering panoramic views of the famous sandbar. Kasamatsu Park, directly above Kono Shrine, is the spot for the classic "crotch-viewing" (matanozoki) perspective.
• Nariaiji Temple: The 28th temple on the Saigoku 33 Kannon Pilgrimage, perched in the mountains above with stunning views of the bay.
• Ine Funaya (Boat Houses): About 30 minutes by car from the shrine, the fishing village of Ine features rows of traditional boathouses lining the water's edge—a scene often called the "Venice of Japan."
• Tango Chirimen (Silk Crepe) Heritage: The wider Tango region is designated as a Japan Heritage site for its traditional silk weaving culture, with workshops and museums scattered throughout the area.

Practical Tips for International Visitors

Kono Shrine and its surroundings are accessible from Kyoto or Osaka. The most common route is to take the JR limited express "Hashidate" to Amanohashidate Station, then cross the sandbar on foot or by rental bicycle (about 45 minutes), or take the sightseeing boat to Ichinomiya Pier (about 12 minutes), which is just a 1-minute walk from the shrine.

The shrine grounds are free to enter and open from 7:00 to 17:00 (closing at 16:30 from December through February). English signage is limited, so it is helpful to prepare some background knowledge before your visit. The shrine office offers goshuin (sacred seal stamps) and protective charms.

Spring (cherry blossom season) and autumn (foliage season) offer especially beautiful settings, while the Aoi Matsuri festival on April 24 features traditional sword-dancing rituals celebrating the divine birth of the shrine's deity—a festival with roots spanning 2,500 years.