From the album 'Last Sessions Their Complete Victor Recordings 1934-1941'
https://www.youtube.com/watch?v=ja20ved7wC4
To simplify the chords transpose up two steps and play without a capo, with chords G, C and D7.
[Intro]
F
[Verse 1]
F Bb F
You tied a love knot in my heart, dear, when you said you'd be my bride,
F G C7
oh, how well I remember as we strolled side by side.
F Bb F
Leaves were falling all around us, roses withered on the ground,
F C7 F
you tied a love knot in my heart, dear, that can never be unwound.
[Instrumental]
F Bb F
F C F
[Verse 2]
F Bb F
The only thing that I have left now is this little string I've found,
F G C7
with a little love knot in it, that she held tight in her hand.
F Bb F
As I stood there by your bedside, as I looked into your eyes,
F C7 F
you tied a love knot in my heart, dear, that can never be untied.
[Instrumental]
F Bb F
F C F
[Verse 3]
F Bb F
There's a heart tonight that's lonely, there's a heart tonight that's sad
F G C7
For God has took you from me, the best pal I ever had.
F Bb F
She's gone to sing up in heaven, God needed her there by His side,
F C7 F
You tied a love knot in my heart, dear, that can never be untied.