Hooray!!Have found 'Marianina' at last. I sang it regularly in 1959 aged 8 to my new sister, parked in her pram next to my swing in the garden, though it didn't seem to work as a lullaby.... Little Red Bird of the Lonely Moor didn't work any better.
I have been trying to remember the words to Marianina recently but been frustrated by gaps- eventually tried Google and found this site. Yum.
Now I intend many happy hours ahead, supplementing my one precious but dog-eared Singing Together booklet.
Thanks everyone - amazing how powerful our music memories are.