The Welsh translation is based on a version I did in choir by Lance Wiliford.
Chords based off of Barry T's comment on a forum by the name of "Mudcat"
[Verse 1]
D F#m Em A7
Sleep, my baby, on my bosom
D F#m Em A7 D
Warmth surrounds you in thy rest
D F#m Em A7
Close are my arms around you,
D F#m Em A7 D
Making you a snug, warm nest
[Verse 2]
D F#m Em A7
I shall never harm thy slumber,
D F#m Em A7 D
None disturb thy tranquil rest
[Verse 3]
D F#m Em A7
Sleep thou calmly, darling baby
D F#m Em A7 D
Sleep thou gently on thy brest
D F#m Em A7
Quiet slumber now shall bless thee
D F#m Em A7 D
With its beauty, sweet and deep
[Verse 4]
D F#m Em A7
Why my loved one art thou smiling,
D F#m Em A7 D
smiling tenderly asleep?
[Verse 5]
D F#m Em A7
Are the hev'nly angel smiling
D F#m Em A7
On thee in thy tranquil rest?
D F#m Em A7
Smiling joyusly upon thee,
D F#m Em A7 D
Calmly sleeping on my brest