Dinant

Dinant is a Cornish knight in Le Morte d'Arthur, attested across 3 citations in Book IX, Chapters XIX and XX. He appears in the episode of Tristram's madness, when a giant seizes him near a well. The giant "went from the herdmen and hid him under a tree, and so the knight came to that well, and there he alighted to repose him" before the giant "rode unto Sir Dinant and took him by the collar, and pulled him afore him upon his horse, and there would have stricken off his head" (Le Morte d'Arthur, Book IX, Chapter XIX). Later, asked about the mad Tristram's whereabouts, Dinant replies: "Forsooth, at the fair fountain in your forest where many adventurous knights meet, and there is the mad man" (Le Morte d'Arthur, Book IX, Chapter XX).