Note 17 — Chapter I · IN WHAT LANGUAGE WAS TIRANT LO BLANCH FIRST WRITTEN?
Reading edition
Why did Martorell change the name from Guy to William (Guillem)? The Catalan form for Guy is Guiu, which may have been easily confused in the MSS. with Guim, a contracted form of Guillem. If this substitution did not result from a confusion in names, the resemblance may have suggested Guillem, which was more popular and therefore may have seemed preferable.