Many thanks to the very kind persons who have responded to my query, suzard and avm228 in particular.
To Suzard : To my knowledge James was never in the Royal Marines. During World Wars 1 and 2 he was in the British and Australian Merchant Navies. The 1901 UK Census that you have shown is the correct one.
To Avm 228: Thank you for prompting me to correct the years of birth. They should, of course, read :-
Doris 1885
James E 1887
Edward E 1889
Fred 1892
Ruth 1894.
Thanks for the info from FreeBMD. I notice that there was also a James Edward born at Dewsbury about the same time. 'Drat it'. Thanks also for the info about the 1911 UK Census. I'll have a good look at that one
Regards, Jim, in Australia