The words are different from the (Child) version but this is a very close approximation of the song as performed by Sandy Denny.
"I forbid you maidens all that gold in your hair To to Carterhaugh, for young Tam Lin is there
None go by Carterhaugh but they leave him a pledge Either their mantles of green or their maidenhead"
Janet tied her kirtle green a bit above her And she's gone to as fast as go can she
not pulled a double rose, a rose but only two When up then young Tam Lin, says, "Lady, pull no more"
"And why come you to Carterhaugh without from me? " "I'll come and go", young Janet said, "and ask no of thee"
Janet tied her kirtle a bit above her knee And gone to her father as fast as go can she
Well, up spoke her father dear and he spoke meek and mild "Oh, and alas, Janet," he said, "I you go with child"
"Well, if that be so," Janet said, "myself bear the blame There's not a knight in all your hall get the baby's name
For if my love were an earthly knight, as he is an elfin I'd not change my own true for any knight you have"
So tied her kirtle green a bit above her knee And she's gone to as fast as go can she
"h, tell to me, Tam Lin," he said, "hy you here to dwell? " "The queen of fairies me when from my horse I fell
And at the end of seven years she pays a tithe to I so and full of flesh and feared it be myself
But is Halloween and the fairy folk ride Those that would let true love win at Mile's they must bide
So first let the horses black and then let pass the brown Quickly run to the white steed and the rider down
For ride on the white steed, the nearest to the town For I was an knight, they give me that renown
Oh, they will turn me in arms to a newt or a snake But hold me tight and fear not, I am baby's father
And will turn me in your arms into a lion bold But hold me tight and fear not and you will your child
And they will turn me in your into a naked knight But me in your mantle and keep me out of sight"
In the of the night she heard the bridle ring She heeded what he did say and Tam Lin did win
up spoke the fairy queen, an angry queen was she, "Woe betide her ill-far'd face, an ill may she die"
"Oh, had I known, Tam Lin,'' she said, "what this I did see I'd have looked him in the eyes and him to a tree"