Thanks very much for this extra information.
I have not been on the Familyrelatives site for a very long time. I have found the Sillery birth record on the site now.
I have also found this Robert Sillery on a ship bound for Halifax, Canada. The ship sailed from London, England in April 1891. He was not with his wife and children and his occupation was listed as military. I can't find any of these Sillerys in England in 1891 so maybe they all emigrated to Canada.
I am doing a one name study for the Pickwick name but have been side tracked by these Sillerys as two married (one male and one female)into the Pickwick lines.