Okay, my curiosity got the better of me, so I decided to see if I could find anything on Richard and Frederick Robinsons, two brothers that Charles the one I got the e-mail from, said were William's brothers. And at first I got very excited because I found their birth records, or at least Richard's. I found marriage records for both as well, but then that's when the mystery skewed.
The parents of Richard H. Robinson and Frederick Robinson are John Robinson and Mary Shrimpton. The problem is that both of them were born in Sophiasburgh, Prince Edward, Ontario, Canada and NOT Hamilton like William and my Edmund. Its discouraging to say the least but it gets worse. In an attempt to find them in Canadian census records I came across ANOTHER potential sibling, Mary Eliza, born about 1853, at least according to the 1871 Canadian census.
It would seem that there are TWO John Robinsons and they both married a Mary (with possible Eliza for a middle name). But could both of them be Mary Eliza SHRIMPTON? The only thing I DO know is that my Edmund (L.C.) Robinson IS listed with John and Mary and William in the 1871 census in Hamilton, Ontario, Canada. I also know that John and Mary Shrimpton are the parents of William Hamilton Robinson because of his death record. So if I could find the birth records or some other record for the other kids (the ones born in Hamilton that is) and prove that Mary Shrimpton is their mother it wouldn't be as frustrating as it is turning out to be. I haven't heard back from Charles yet and I can't use Ancestry till Tuesday (the library is closed Monday for Pulaski Day here in Chicago). Its going to drive me crazy till then but I'm going to keep digging using FamilySearch. I have to find a way to separate the two John and Mary Robinsons.