Couldn't find any evidence on-line to justify my suspicion, but I doubt very much that it's pronounced in the same way as the bird. At any rate, I always thing of him as "Rar-ven".
The only 'Raven' I've ever known was a little girl - American, of course - who was Ray-ven, as in the bird.
I gather it's quite popular as a girl's name in taste-free Yankee-land. I think it's a perfectly ghastly name & would never have saddled any daughter of mine with it! Still, chacun à son goût, I suppose...