the only marriage I could find for a Harry Bailey in Dewsbury was July Q 1940 and the wife was Elizabeth Stones.
There is a marriage in 1930 Doncaster to a Mary M Moxon with husband Wilfred E Bailey. I also found your Mary 1919 with mothers maiden name Mawson.The only problem being her age at marriage would have been 11 years.
There is another birth of a Mary Monica Moxon 1905 in Hemsworth, she would have been 25 at marriage. Mary Monicas parents are Wilfred and Julia.
I can find possible 1908 birth for your Masie (Maisie)in Gainsborough.
The only Moxon/ Mawson marriage I came across was Luke Moxon and Ada Mary Mawson Doncaster 1897, the other marriages dates are all out.
I found 2 year old Maisie Moxon with parents george Percival and Gertrude.
Iam not sure I have helped at all but rather confused the issue!!