Tracing Western Ibaraki Place Names: Confirmed and Unconfirmed
Among the names in the Hard-to-Read Place Names quiz, some have an origin that can be traced through the sources, and others survive only as a reading with no confirmed story behind them. Nine names, sorted into the two groups.
The Kensei edition of the Hard-to-Read Place Names quiz covers 120 names across Koga, Yuki, Shimotsuma, Joso, Chikusei, Bando, Sakuragawa, Yachiyo, and Sakai. Beyond memorizing a reading, some of these names invite a closer look at what is actually known about them.
Nine names are chosen here, one or more per tier. Where an origin can be confirmed, the source is cited; where it cannot, this article says so plainly rather than guessing. Not every name in the region has a documented origin, and that gap is worth stating on its own.
Koga and Yuki: the castle town and the silk district in the northwest
Onanuma (女沼)
A Koga City neighborhood read "Onanuma." The catch is that the first character, usually read "onna" or "jo," takes the reading "ona" here, but no source explains why. "Numa" (marsh) is common in place names across the lowlands where the Kinu and Watarase rivers deposit sediment near Koga, so a link to the terrain is plausible, though this remains a guess rather than a documented fact.
Source:Japan Post -- Postal Code Search (Koga, Ibaraki Prefecture)
Shimeba (七五三場)
A Yuki City neighborhood read "Shimeba." A district called "Shimeha" is documented from the early Kamakura period, and a 1590 land grant from Toyotomi Hideyoshi to Yamakawa Harushige still writes it "Shimeha." The name was rewritten with the auspicious-sounding characters for "seven-five-three" sometime around the early Edo period, but no record explains why that particular substitution was made.
Source:Shimebamura - Kotobank
Shimotsuma and Joso: the lowlands shaped by the Kinu and Kokai rivers
Takasai (高道祖)
A Shimotsuma City neighborhood read "Takasai." Takasai Shrine, dedicated to a dosojin roadside deity, sits on a rise of ground that stands higher than the surrounding land and the Kokai River, and the name is thought to describe a dosojin shrine on that high ground. Reading "dosou" as "sai" is treated as an older reading pattern that turns up in dosojin-related place names elsewhere in Japan. The area was an independent municipality, Takasai Village, until 1954.
Source:Takasaimura - WikipediaTakasai Shrine in Shimotsuma City
Kinu (鬼怒)
A Shimotsuma City neighborhood read "Kinu," which appears to take its name from the Kinu River running through Kensei. The river was originally called the "Kenokai," written with characters for "Kinugawa" in the sense of "cloth river" or "silk river" from medieval into early-modern times, before the current characters for "Kinugawa" (literally "demon anger river") became standard in the early Meiji era. The place name "Kinu" keeps the same reading independent of how the river's own spelling shifted.
Source:Kinugawa (river) - WikipediaThe origin of the names Kinugawa and Kokaigawa -- Shimodate River Office
Mitsukaidou (水海道)
A Joso City neighborhood read "Mitsukaidou," a name that gave its name to the former city of Mitsukaidou until it merged into Joso City in 2006. Several origin stories circulate: a legend that Sakanoue no Tamuramaro watered his horses here, giving "Mitsukaeto"; an older written form, "Mizukaeto," recorded in 16th-century documents; and an alternate name, "Mitsukaidou" written with different characters meaning roughly "honorable strait road." All point toward water and river transport, but no single confirmed origin exists.
Source:Mitsukaidou - WikipediaWhat is the origin of Mitsukaidou (present-day Joso City)? -- Collaborative Reference Database
Sunouya (収納谷)
A Joso City neighborhood read "Sunouya." The first two characters, meaning "storage" or "harvest," are read "sunou" here, the crux of the difficulty, but no source explains why. The last character, "ya" (valley or lowland), is common in place names along the Kinu and Kokai rivers, so a link to the local terrain is possible, though unconfirmed.
Source:Japan Post -- Postal Code Search (Joso, Ibaraki Prefecture)
Chikusei, Bando, and Sakai: reclaimed fields and old roads in the south
Mushirouchi (莚打)
A Bando City neighborhood read "Mushirouchi." "Mushiro" refers to a woven straw mat; no source explains the origin of the name itself, though the characters at least confirm a connection to an everyday woven object. Bando City, formed in 2005 from the merger of Iwai City and Sashima Town, took its own name from "Bando," an old term for the Kanto region.
Source:Japan Post -- Postal Code Search (Bando, Ibaraki Prefecture)
Kujira (久地楽)
A Chikusei City neighborhood read "Kujira." The three characters give little indication of this pronunciation on their own, and no source explains its origin. Read aloud, the name is identical to "kujira," the word for whale, but inland Chikusei City has no documented connection to the sea creature; the match appears to be sound alone.
Source:Japan Post -- Postal Code Search (Chikusei, Ibaraki Prefecture)
Shitori (志鳥)
A Sakai Town neighborhood read "Shitori." Under the 1889 municipal reorganization, the former Shitori Village merged with Tsukasaki, Yokotsuka, and Inao villages to form Shizu Village in Sashima District, which was later folded into today's Sakai Town through further mergers. That administrative history is documented, but no source explains the origin of the name "Shitori" itself.
Source:Sakai, Ibaraki - Wikipedia
FAQ
What separates a name with a confirmed origin from one without?
Whether a public record or source actually describes how the name came to be. Takasai, Mitsukaidou, Shimeba, Kinu, and Shitori all have historical records or terrain links behind them; Onanuma, Sunouya, Mushirouchi, and Kujira have nothing beyond the reading itself in the sources checked here.
Why not offer a guess for the names with no confirmed origin?
Stating an unconfirmed origin as fact risks being taken as established truth. This article reports only what the cited sources support and says plainly when nothing more is known.
Where do these names appear in the Hard-to-Read Place Names quiz?
Each one appears as an actual question at the Intermediate (tier 2), Advanced (tier 3), or Super Difficult (tier 4) level. Once you've confirmed a reading here, you can test it in the quiz.
How can I look into the origin of a name not covered here?
The sources listed with each entry above are a starting point. Kensei has plenty of names beyond this list whose origins can and cannot be traced, in roughly equal measure.
Sources & references
- Japan Post -- Postal Code Search (Koga, Ibaraki Prefecture)
- Shimebamura - Kotobank
- Takasaimura - Wikipedia
- Takasai Shrine in Shimotsuma City
- Kinugawa (river) - Wikipedia
- The origin of the names Kinugawa and Kokaigawa -- Shimodate River Office
- Mitsukaidou - Wikipedia
- What is the origin of Mitsukaidou (present-day Joso City)? -- Collaborative Reference Database
- Japan Post -- Postal Code Search (Joso, Ibaraki Prefecture)
- Japan Post -- Postal Code Search (Bando, Ibaraki Prefecture)
- Japan Post -- Postal Code Search (Chikusei, Ibaraki Prefecture)
- Sakai, Ibaraki - Wikipedia