At this site, the title of #1 is "To the Greenwood," with a note: "These are the words most people know for this round. In the 17th-century versions, the line is 'To the gallows, gallows....gallows tree'!" In the Hilton book, however, the spelling is "gallow" instead of "gallows." I'm still looking for #2's background info, without success.

~Masato