1890, Ouida, Othmar. Friendship. And other stories (page 545)This night, when the Lady Joan sternly bade her knight attend the knightless damsels to their home, Ioris obeyed.
The Rubinstein Attack!: A Chess Opening Strategy for White
2010, Dennis W. Shepherd, The Papaw Diary (page 300)The knightless armor moved toward Rocky. When it was just a few feet away, the visor of the helmet opened and the loudest and scariest shriek anyone could every imagine came out of the helmet.
2012, Jonathan H. Grossman, Charles Dickens's Networks: Public Transport and the Novel (page 220)shining the heroics of a latterday Don Quixote upon a knightless age