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 travel to Carterhaugh, for Tam Lin is there
None that go by Carterhaugh but they him a pledge their mantles of green or else their maidenhead"
Janet tied her green a bit above her knee And she's to Carterhaugh as fast as go can she
She'd not pulled a double rose, a rose but two When up came young Tam Lin, says, "Lady, pull no more"
"And why come you to Carterhaugh without from me? " "I'll come and go", Janet said, "and ask no leave of thee"
Janet her kirtle green a bit above her knee And she's gone to her father as as go can she
Well, up spoke her father dear and he spoke meek and mild "Oh, and alas, Janet," he said, "I think you go child"
"Well, if that be so," Janet said, "myself shall the blame not a knight in all your hall shall get the baby's name
For if my love were an earthly knight, as he is an grey I'd not change my own love for any knight you have"
So Janet tied her kirtle green a bit above her And she's to Carterhaugh as fast as go can she
"h, to me, Tam Lin," he said, "hy came you here to dwell? " "The queen of fairies caught me from my horse I fell
And at the end of seven she pays a tithe to hell I so fair and full of flesh and it be myself
But tonight is and the fairy folk ride Those that let true love win at Mile's Cross they must bide
So first let pass the horses and then let pass the brown Quickly run to the white steed and the rider down
For I'll ride on the white steed, the nearest to the For I was an earthly knight, they give me that
Oh, will turn me in your arms to a newt or a snake But hold me tight and not, I am your baby's father
And will turn me in your arms into a lion bold But hold me tight and fear not and you will love child
And they will turn me in arms into a naked knight But cloak me in mantle and keep me out of sight"
In the middle of the night she heard the ring She heeded what he did say and Tam Lin did win
Then up spoke the 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 night I did see I'd have looked him in the and turned him to a tree"