Born as a child of today's 'genchi-zuma' (a local woman treated as a wife of a male legally married to another woman in his hometown), Korenaka later went to Kyoto with his younger brother Narimasa and entered Daigaku-ryo (Bureau of Education under the ancient administrative system).
今で言う「現地妻」の子として生まれた惟仲は、後に弟の生昌と共に都に上り、大学寮に入る。