In fact, the status as the direct descendant of the Minamoto clan, which was created out of political consideration by Yoritomo who was born into the Minamoto family, and became established, was used politically in the end by the Tokugawa shogun family in order to conquer the country.
事実、源氏に生まれたものの頼朝の政治的な思惑により生まれ、確立さされていった源氏嫡流の地位は、最終的には徳川将軍家が天下を平定するにあたり、政治的に利用されることとなった。