I would be very wary of these kind of coincidences,
Surprisingly, there is actually a lot of this sort of thing going on, especially around the time of passing of a locally notable person, especially a minister or pastor. Or if a youngish person dies tragically. For a couple of years, a lot of kids will get his first and last name as their first and middle name.
Unless there is actual evidence, such as having the exact same birthday or the same relatives, it is probably best to maintain separate profiles for these people for the time being, and then merge them with an explanation about the names if it becomes clear that they are the same individuals.
Since we are talking about a fairly recent time frame, some DNA connection would also help.
So, since you asked, i would say that those 'coincidences' are possible hints at the most, and require a great deal more research.
Keeping an open mind, let's try to find out all we can on each of the names. It is possible that there is a step-dad involved and John Daniel used his step-dad's name at different points in his life. There are several scenarios under which this could all be true, or not true at all. More research required.
Here is an ancestor of mine whose name change puzzled me for a few months:
You will notice that there was more than a few 'coincidences' together that finally convinced me that they were the same person.
The PM of Bridget's profile, who is also her descendant, has a shared match at GEDmatch
who has linked a GEDcom with multiple lines of Aucoin ancestry from the Acadian side. This might give good hints.
I think the Warren line is a red herring -- a different Bridget Aucoin/Wedge. The Smith line seems to work properly except there are actually a John Daniel Smith Sr and Jr. JD Smith Sr married Maude Susie Vradenburgh and was the father of John Daniel Smith Jr who married https://www.wikitree.com/wiki/Crew-406 in 1945 as per the current profile for the conflated John Daniel Smiths.
Thanks. First, on Prince Edward Island, Wedge and Aucoin have been recognized as the same family for many years - like Perry for Poirier, and Peters for Pitre. It might have depended on whether or not the Priest at the time was French/Acadian, or Irish, the name used on marriage and baptismal documents.
I went back to look at the many documents associated with John Daniel Smith (none before his 1915 marriage in Vermont). He gave his address at the time of enlistment in 1911 on a later military document as 1364 Melville St Philadelphia. I found Daniel S. Warren living at 1364 Melville St, Philadelphia in a city directory, 1916 (Ancestry City Directories database).
That might be just another co-incidence.
Still can't find them in census records in 1900 or 1910.
Family 27 1881 Census of Canada / Family 170 1891 Census of Canada
Annie Jane Wedge 1878
Item 2958 1881 census of Canada
Item 3159389 1891 Census of Canada
Barbara Wedge 1869
Item 2953 1881 Census of Canada
Item 3159384 1891 Census of Canada
Bridget Wedge 1876 (04 May 1875)
Item 2957 1881 Census of Canada
Item 3159388 1891 Census of Canada
Elizabeth Wedge 1881 Item Item 2959
Ellen(Blacquiere) Wedge 1853
Item 3159383 1891 Census of Canada
Eustache Wedge 1870 (15 JUL 1871)
Item 2954 1881 Census of Canada
Item 3159385 1891 Census of Canada
John Wedge 1835
Item 2951 1881 Census of Canada
Item 3159382 1891 Census of Canada
Magdelna Wedge 1872 (12 JAN 1872)
Item 2955 1881 Census of Canada
Item 3159386 1891 Census of Canada
Ma ry Wedge 1874
Item 3159387 1891 Census of Canada
Emaline Wedge 1886 (20 AUG 1885)
Item 3159392 1891 Census of Cnada
Emma Wedge 1880
Item 3159390 1891 Census of Canada
John W Wedge 1883 (15 JUN 1882)
Item 3159391 1891 Census of Canada