Nora, when you search the database, you can sometimes have better luck if you choose a complete phrase that's contained in the song, and then enclose it in square brackets. If you put [give yourself to love] in the search box of the upper-right corner of the page, you'll find it. Nice song, isn't it? I find it's just a little too difficult for group singings, though.
Chords are:
C Am F C / - Am F G
C G F C / - Am FG F -
CHORUS: C Am FG C / - aM g - / C Am FG C -

The song for weddings that comes to mind just now is Cole Porter's "True Love," from the movie "High Society." Not folk, I suppose, but I think it would sound nice with a single voice and a guitar.
-Joe Offer-