In the middle of the Edo period, the Mikawa-Kira clan ended their family line by the Genroku Ako Incident, and the Oshu Kira clan took this opportunity to retrieve their family name 'Kira.'
江戸中期では、元禄赤穂事件によって三河吉良氏が断絶したことを契機に、「吉良」に復姓した。