This was originally written in latin by Thomas Randolph and was later translated into english by James Henry Leigh Hunt. According to the first provided link, the verses were taken from a drama by Randolph called Amyntas, or the Impossible Dowry. The second link is a poetry site and will have more information on the author.
Song of Fairies Robbing an Orchard or Fairies’ Song
We the fairies blithe and antic
Of dimensions not gigantic,
Though the moonshine mostly keep us,
Oft in orchards frisk and peep us.
Stolen sweets are always sweeter;
Stolen kisses much completer;
Stolen looks are nice in chapels;
Stolen, stolen be your apples.
When to bed the world are bobbing,
Then’s the time for orchard robbing;
Yet the fruit were scarce worth peeling
Were it not for the stealing, stealing.