Pronounciation

I throw this out to the multitude because I forgot to ask my creative writing teacher.

How do you pronounce the name Proserpine? Is it Pross-er-pin-ay or Proser-pine or Proz-er-pin-ay or what?

I've seen it written down. I know she's in a poem by Shelley (I think it's Shelley) but I've never heard it said.