The descendants of this lineage used MINAMOTO as their family name throughout generations; materials from the Edo period show that they used MINAMOTO as both their 'myoji' (a part of the family name used before the Meiji Restoration which was based on the person's place of residence) and 'sei' (a part of the family name used before the Meiji Restoration which indicates a person's lineage).
この系統は代々源姓を名乗り、江戸時代の資料等にも苗字が源であり、姓も源とある。