I will look for more Canada & answer on the Canada board...I did look for some deaths...etc. but not all are on there...so may find more using other methods....but will be answering on the Canada board . If you want to ask Jackie for more information regarding incoming passengers & censuses in U.K. as I don't see Daniel & Emma or son in 1901 Canada... Was your man born in U.K.? Was he born Canada? If born in U.K. and before the 1901 this is important for us to know!...I see a death for an Emma Catherine in 1908 Dewsbury age 38 was that she? Do you know of all the siblings ? Don't be vague with what you do know, because if people look up information that you already have it is a waste of resources.
also we are not allowed to do post 1911 information on here, but you can search basic information here:
http://www.1911census.co.uk/searchJ.J.
added: also, note that Daniel was a clerk at the time of his second marriage...so like most starving artists, probably never made enough to make a living at it ...also if your mother met and knew of the Lawrences, then I am sure some of them will have heard of the Fosters as well...