no relation

References in classic literature ?
I assure you, sir, I am no relation of Mr Allworthy; and if the world, who are incapable of setting a true value on his virtue, should think, in his behaviour to me, he hath dealt hardly by a relation, they do an injustice to the best of men: for I--but I ask your pardon, I shall trouble you with no particulars relating to myself; only as you seemed to think me a relation of Mr Allworthy, I thought proper to set you right in a matter that might draw some censures upon him, which I promise you I would rather lose my life than give occasion to.