How could he say that he did not know the name of his mother's family to that total stranger?--who indeed had taken an unwarrantable liberty in the abruptness of his question, dictated probably by some fancy of likeness such as often occurs without real significance. 
How could he say that he did not know the name of his mother's family to that total stranger?- who indeed had taken a liberty in asking the abrupt question, probably thinking he saw some likeness. 