I can confirm Guy was married to Nellie Poland and that she was at home with parents in 1910, so maybe they divorced as I can't find a death before Guy married Mona in 1917. I traced Guy's brother Carl a little - he died in Oregon in 1968 and had moved around the States quite a lot (and had several children). Still searching for what happened to Mona after Guy died (she didn't go to UK) and the 1924 Canadian application shows he must have been there for work - but daughter Margery was born in UK in 1924, so a bit of a puzzle. Still looking for her too. It is interesting that Mona's brother (my grandfather) was in the coal mining business too - maybe Guy visited UK and there met Mona? Who knows!