Prior to World War II, they were called 'jindaishi (history of mythological age)' or 'taikoshi (history of ancient times)' and, after the war (until the 1970s) Kiyohiho AGO called them 'chokodai monjo (super-ancient documents).'
"The Japanese and the Jews" by Isaiah Ben-dasan (translated by Shichihei YAMAMOTO), Bungeishunju Ltd. (1970, nowit has been publishedby Kadokawa Group Publishing Co., Ltd. asabookwrittenby Shichihei YAMAMOTO, 2004.)
Firstly, followingdetailedresearch that appeared in Yoshihiko AMINO's "Wakasa no kuni ni okeru shoensei no keisei" (The formation of the manorsystemin Wakasa Province) (1969), Susumu ISHII's "Insei jidai" (The Age of Cloistered Emperors) (1970) and "Oota Fumi" (The letters of Oota) in "Sobu no bushidan" (Bushi groups of the Sobu region), which appears in "Kamakura bushi no jitsuzo" (The Real Face of Kamakura Warriors) (1978), it became clear that most manors were establishedafter the mid-12th century, during the reigns of the Cloistered Emperors Toba and Gotoba, and that by the time this large-scaleexpansionstoppedin the 13th century, the ratio of shoen to nationalland was onaverage of six to four, orabout even.
He received the Shiju Hosho (medal of honor with purpleribbon) in1970, the Zui Hosho (Orders of the Sacred Treasure) and the Kyoto City Cultural Order Award in 1973.