Green’s Dictionary of Slang

more rogue than fool; orig. and usu. of a servant.

1867

J. Greenwood Unsentimental Journeys 137: Perhaps it is only people that are more F. than R. who have the privilege of seeing such things, and of writing about them after they have seen ’em. If so the Christmas-story writer is not so blameable a person as if he were more R. than F.