There wasn't any information that I could find on the month of May itself without running into a lot about May Day or Beltainne and I'm going to save that for my next posting.
What I did find out was that there are several stories about how the month got it's name. The most accepted is that it's name after the Roman goddess of Spring and growth, Maia. The Roman poet Ovid provides us with a second explanation. He states that the month of May was named after the word maiores, the Latin word of 'elders', but not much thought is given to this idea.