I think its likely we will find a connection here. I have not got very far researching the wilemans yet, but I do have a John Wileman born in Stamford in 1831, his father was Maurice. Is it possile that my John (my g.g.g. grandfather) is the brother of your Edward?
Wileman is not a particularly common name and neither is Maurice, so I think it is likely.
I would be interested in corresponding with you furher on this.