It's just what English speakers do. When a person's name comes with an adjective, it often gets the indefinite article. Try this -- you will find some interesting posts there.
Student or Learner
I came across the following sentence in one of the Harry Potter books:
"She wrestled a screaming Dudley into his high chair."
Dudley is a boy's name
Why is the indefinite article used before the name? What does it signify?
Also, it's not necessarily the indefinite article. If Dudley had already between described as "screaming", the sentence would read:"She wrestledthe screaming Dudley in to his high chair."
That is, the normal rules apply.
Last edited by Raymott; 13-Jun-2012 at 05:15.