[RobertDDL]

I’m editing a public domain book - The Citadel of Fear, by Francis Stevens (Gertrude Barrows Bennett) - in which the protagonist is called Boots, “the nickname being probably derived from the enormous pair of cowhides in which the young Irishman had essayed desert travel.”

In the text, at least the version that’s available to me, the genitive of Boots is written Boots’: “Boots’ eyes lighted appreciatively,” etc. Am I right in thinking that this is wrong, because, while “boots” is plural, the name Boots is singular, and therefore, as with Chris’s or Jones’s or Tess’s eyes, it should be Boots’s, or am I mistaken? Thank you for helping a non-native speaker out!