Koga Family History
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Koga Name Meaning
Japanese: ‘old river’; variously written, with one ancient variant of imperial descent pronounced Kuga; other alternate readings are Furukawa or Kogawa and are derived from a village named Koga in Shimosa (now Chiba prefecture). The most common Koga name is mostly found in Kyushu, and is descended from the Takeda family. The name is also found in the Ryukyu Islands.
Source: Dictionary of American Family Names ©2013, Oxford University Press