I learned this tune from Nic Jones about 20 years ago. I don't know if he ever recorded it. The words are very similar to one version in the DT, but the link to that MIDI file is broken, so I don't know if it's the same tune. It's a deceptively simple tune; I've never been able to make up my mind whether it's in the key of D or Am. One way or another, it is one of the loveliest of all tunes.

X:1
T:THE GREEN MOSSY BANKS OF THE LEA.
M:3/4
K:DMix
A | "D"A2"C"e3 e | "G"d4 BA | "C"G2 "D"A4- | A4 AB
| "C"c3d ef | gf e2 g2 | "D"a6- | a4 ba |
"C"g4 ed | "C"c2 "G"d2 B2 | G2 "Am"A4- | A4 AB | "C"cBcd ec | "G"d2 BA G2 | "D"A6- | A4-A ||
W:
W:When first to this country, a stranger, Curiosity forced me to roam
W:Over Europe I resolved to be a ranger, When I left Philadelphia my home.
W:
W:We quickly sailed over to England, Where forms of great beauty do shine
W:And twas there that I met a young woman, And I wished in my heart she was mine.
W:
W:Twas there that I met a young woman, she seemed like some stranger to me
W:As she rose from the reeds by the water, On the green mossy banks of the Lea.
W:
W:I stepped up and wished her good morning, And her cheeks they did blush like some rose
W:I said "Oh how the river is charming, and your guardian I'll be if you choose"
W:
W:She said "Sir I ne'er want a guardian, Kind sir you are a stranger to me,
W:And yonder's my father a-coming, O'er the green mossy banks of the Lea.
W:
W:I stepped up and wished him good morning, saying "Your daughter a lady shall be
W:She shall ride in a carriage and horses, O'er the green mossy banks of the Lea"
W:
W:They invited me back to their cottage, and soon this fair maiden was mine
W:And twas there I did build a fine castle, In grandeur and splendour to shine.
W:
W:So now this American stranger, All pastimes and pleasures can see
W:He can live with his gentle young woman, On the green mossy banks of the Lea.

Line Breaks
added.
-Joe Offer-