Minamoto

Minamoto, also known as Genji in historical and literary contexts, was a major Japanese clan descended from Emperor Seiwa through the Seiwa Genji line. The Minamoto and the Taira (Heike) clans contended for supremacy in the late Heian period, shaping court politics and military affairs as rival power blocs.

In the Genpei War (c. 1180–1185) the Minamoto defeated the Taira, establishing their dominance over western Japan and enabling the rise of a new form of governance. Minamoto no Yoritomo founded the Kamakura shogunate after the war, becoming the de facto ruler of Japan and inaugurating the first centralized military government (bakufu). The early Kamakura regime relied on a balance between the shogun’s authority and powerful regents, notably the Hojo clan, who controlled much of governance in later years. The direct Minamoto line produced shoguns such as Minamoto no Yoriie and Minamoto no Sanetomo, but over time real power shifted away from the line that bore the name Minamoto.

Notable figures associated with the Minamoto include Minamoto no Yoshitsune, celebrated in Japanese epic tradition as a brilliant and daring general, and Minamoto no Yorimasa, an early warrior-poet who fought in the Genpei conflicts. The Minamoto name and its legacy extended beyond sovereign rule, influencing political and cultural life through the Kamakura period and into later ages.

In literature and folklore, the Minamoto are central to the Tale of the Heike, which dramatizes the rise of the Minamoto and the fall of the Taira and reflects the transition from courtly power to samurai rule.