Yes and no. The Gilead of Roland's youth was a place of high culture and strict social rules which forged a lot of Roland's character. The gunfighter archetype doesn't necessarily have that courtly foundation. Certainly there's a lot of overlap between the two, but the classic gunslinger needs no past (i.e. Eastwood's High Plains Drifter). A knight's training, upbringing and pedigree are essential elements of his legend.
You’re correct. A simple Gunslinger would never say “I cry your pardon; I have forgotten the face of my father.”
Hmm, now that you put high culture and gunfighter in the same paragraph that brings up Val Kilmer. Did a fine job as Doc Holiday, a gunfighter with high culture root, certainly he didn’t wind up as noble as Roland but it’s the other side of the same coin. He might not be weather worn enough, but there’s a definite maybe there.