Last name origin & meaning: Japanese: ‘mountain castle’, taken from the name of the main
province of the three which now comprise Kyōto prefecture. The
place name originally meant ‘behind the mountains’ and described the
position of the place relative to the more ancient capital city of
Nara. When Emperor Kanmu moved the capital there in 794, he changed
the second character to its present meaning. Some other families have
taken the name from other places with the same name. The surname is
mostly found in western Japan and the Ryūkyū Islands, where it
is pronounced Yamagushiku. It is listed in the Shinsen
shōjiroku.
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