Generally speaking, it’s awkward in English (or even weird) to constantly use the Proper Noun every single time you refer to a person.
Simplest example is “Jim got into his car”. “Jim got into Jim’s car” is strange. And that’s within a single sentence. Properly in English, we use gendered pronouns for all unambiguous references to a person several sentences in a row. For example:
“Jim got into his car. He turned it on, and hit the gas. When he saw a red light, he stopped quickly. Jim got impatient, and honked on the horn”. That would be entirely proper, and virtually none of those pronouns should be replaced with Jim’s proper name.
Corkyskog