What makes Bessie convinced that the young man is indeed Harry?

When Bessie swiftly asked Harry ‘Are you really Harry Hagberd’? ‘Can you prove it?’Harry replied confidently yes I can prove it Harry stuck a fancy beard on his chin and asked Bessie now say am I resembling him or not? Bessie told murmuring that ‘It’s true,’ After that, he told every possible detail to Bessel that evident that he is only Harry like Mother nagged at me for being idle, and the old man said he would cut my soul out of my body rather than let me go to sea. Well, it looked as if he would do it too. These memory based details told by Harry convinced Bessie that the young man was indeed Harry.