King Biryu of Baekje (?-344, reigned 304-344) was the 11th king of the ancient Korean kingdom of Baekje, one of the Three Kingdoms of Korea. According to the Samguk Sagi, he was the younger brother of the 7th king of Baekje, King Saban. However, since this would make him rule until at least the age of 110, modern historians commonly assume that Biryu was in fact the son or grandson of King Saban's younger brother.
King Biryu ascended to the throne after the son of King Bunseo was deemed too young to rule. This appears to have been part of a power struggle between the two branches of the Baekje royal family, the descendents of King Saban and the descendants of King Goi who supplanted him. Japanese genealogical records record King Biryu, like King Saban, as the progenitor of certain aristocratic clans of Yamato Japan.
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