Hi Deb,
Was this your David Eeles in the 1851 census?
Abode: Brown Street, St George Hanover Sq Middlesex
David Ecles aged 39 born Newbury Berkshire Occ: Bricklayer, Lodger
also recorded, possibly his children:
Edwin aged 17 born Hants
Emma aged 13 born Newbury
Edward aged 12 born Newbury
Isabella aged 8 born Middlesex
Elizabeth aged 5 born Middlesex
Maxie aged 3 born Middlesex
If so there is a death reg for an Elizabeth Eeles aged 38 Dec Q 1850 St George Hanover Square which may be his wife  
birth registrations for Elizabeth and Isabella born Middlesex:
   
 
ECLES, ISABELLA        MMN GRUBB      
GRO Reference: 1842  S Quarter in MARYLEBONE  Volume 01  Page 164
 EELES, ELIZABETH        MMN GRUBB        
GRO Reference: 1845  J Quarter in SAINT GEORGE HANOVER SQUARE  Volume 01
and another child:
EELES, CLARA  ANN      MMN GRUBB      
GRO Reference: 1843  S Quarter in SAINT GEORGE HANOVER SQUARE  Volume 01  Page 34
 Death:
ECLES, CLARA  ANN      aged 3      
GRO Reference: 1846  D Quarter in SAINT GEORGE HANOVER SQUARE  Volume 01  Page 31 
I wonder if Martha Wade (nee Grubb) born 1808 and Elizabeth Eeles (nee Grubb) born c1812 (assuming this is the wife of David) were sisters. 
Have you managed to find David Eeles in the 1841 census?