My Dad, Hadyn, was the second of four brothers' Glyn, Dad, Harold and David.
All coal miners from the village of Resolfen in the Neath valley.
Dad was born in 1906 and along with the others decided to join up in the Royal Welch Fusiliers, (we're not going down those bloody mines again), at the time of the General Strike.
All four of them served through WW2 and came out the other side.
When I knew them in the 1950's they used to sing Cosher Bailey when they'd had the odd beer or two. So no doubt the song had travelled the world with them and people like them.
I can remember singing and hearing it in all sorts of unlikely places when I was in the Merchant Navy.
Its just the good old folk process.