Thanks for the contributions so far. Just had another thought myself, a simplified variation on the version which is on the DT:-

BRIGHT MORNING STAR

1 Bright morning star's arising
Bright morning star's arising
Bright morning star's arising
Day is a-breaking in my soul.

2 Where are our dear children
Where are our dear children
Where are our dear children
Day is a-breaking in my soul.

3 They've gone to heaven shouting [or possibly "singing"?]
They've gone to heaven shouting
They've gone to heaven shouting
Day is a-breaking in my soul.

4 Bright morning star's arising
Bright morning star's arising
Bright morning star's arising
Day is a-breaking in my soul.

Alan