thankless person

Needless to say, as soon as my innocence had succeeded in comprehending the inward meaning of the counsel, I repudiated it with scorn and rebuked the caddie bitterly for suggesting it; and, equally needless to say, he thought me both a thankless person and a very particular species of Sassenach fool for so rejecting it.

Still, it ought to be mentioned that no sooner had my old lady found out John, than John made known to her and me that he had had his eye upon a thankless person by the name of Silas Wegg.