When we were children, our father used to sing us to sleep with a song he called "Whippoorwill". His twin brother used to sing his kids to sleep with the same song; they have both now passed away. Our cousins as well as ourselves have searched for the song but have never had any success. Dad was born in 1918 and used to sing the song to neighbours when he was a child of six years old, so the song was aorund in the early 1920s.
The first line goes something like: "there's a whippoorwill softly singing in the pale moonlight"
Can anyone shed any light on the song, composer or origin?