According to "The tale of the Heike," when he was going out to sea with his retainers on a small boat, seven people in all, a samurai named Seiemon Kinnaga, TAIRA no Tomomori's retainer, came in a rush to ask for a lift.
『平家物語』では、主従7人で小船に乗り沖合いに逃れようとしたところを、清衛門公長という平知盛の侍が乗せてほしいと駆け付けて来た。