eggsits ....shall I hum it? 
I think its an original tune.
SO Im no musician, but I picked out the tune Using this virtual keyboard....
I may well have started on the completely wrong note 
, but....
G G G F F D# D#
Where have you been all the day
Bb Bb C1 G Bb
El-le- ry my son?
G G G F F D# D#
Where have you been all the day
G# G#G G-F
My little one?
G F D#;
Eatin' muvver
A G F#
Eatin' muvver
A A A A A
Oh muvver come quick
A AA A A
Im gonna be sick
A A G F# E D
And lay me down to die
Sorry for the hijack OP, but Ellery will always be the subject of a Scouty song for me. I do like the name though, if its any help . Its a real lads name to me. But possibly because of visions of a youngster running wild and eating eels.