I have a few questions about these name origins.

1) How did the name "Pluto" (the dog) originate? Is it possible that "Pluto" came from "Bluto", or vice versa, judging that Popeye and "Steamboat Mickey" were made around the same time? (What years did they come out?

2) What came first, Woodstock, the bird from Snoopy, or Woodstock, the music festival? Was one named after the other? Again, when did these events occur (Woodstock the bird coming out whenever Charles thought him up or published him.)