I assume you have thse census and just haven't listed them.
1841 Census
http://search.ancestry.co.uk/cgi-bin...s=&gst=35&so=3
Class: HO107; Piece 276; Book: 5; Civil Parish: East Stonehouse; County: Devon; Enumeration District: 5; Folio: 13; Page: 20; Line: 19; GSU roll: 241335.
1851 Census - I assume Simeon was at sea or somewhere else on this one
http://search.ancestry.co.uk/cgi-bin...28728&recoff=9
Class: HO107; Piece: 1880; Folio: 187; Page: 76; GSU roll: 221029.
1861 Census
http://search.ancestry.co.uk/cgi-bin...ki1861&indiv=1
Class: RG9; Piece: 1446; Folio: 7; Page: 8; GSU roll: 542814.
Edit to say: realise now why they weren't listed.