Oyama Family History
Oyama Name Meaning
Japanese:: written 小山 ‘small mountain’. Another common pronunciation is Koyama ; both are found throughout Japan. One family is descended from Fujiwara no Hidesato (10th century) of the northern branch of the Fujiwara clan. (Ōyama): written 大山 ‘large mountain’. It is listed in the Shinsen shōjiroku. Some bearers have samurai connections.
Source: Dictionary of American Family Names 2nd edition, 2022