An odd coincidence

I was reading P.G.Wodehouse's Uncle Dynamite, where I came across two names.

1. Harold Potter
2. Hermione Bostock

Then I read another one of his works, Plum Punch: Four Short Stories, which had the names

1. Dudley Jones
2. Stanley Pettigrew

Which led me to think that maybe, just maybe, some of the names in Harry Potter are taken from Wodehouse's creations. This is wild conjecture, but it leads to an interesting observation. When I need a new name, I search through a huge database on the net, struggling through to find a name which fits the character in my head. However, what Rowling may have done is picked up a book from her shelf, turned to a page and stuck to the name she found. I think that is a good method, much better than mine. It leads to no waste of time and is quite practical. No human has a control on his name, then why should a character.

On the other hand, when parents name their kids, they do take some trouble finding the name. Then, shouldn't it be same for writers and their characters.

I think that the main characters should be names properly, and the others should hope that they dont get named Polly Parrots or Pongo Twistleton.

I, myself, would prefer to be known as "Absolutus Fantasticus", thank you very much!