Hi queenie3,
Looks like he married Mary PUSEY/PUZEY

1851 Census
HO107/1685/642/10
Boxford, Berkshire
Geo PU?EY ( indexed as Puzey), 68, Head, Widow, Ag lab/pauper, born Boxford
Danl Pusey, 21, Son, Unm, School Master
GEO ROBERTS, 45, Son-in-law, Ag, lab, born Wiltshire, Maningford
Mary, 39, Wife, Mar
Mary L, 12
Martha, 10
Hannah, 8
William, 6
George, 2
All others born Boxford
You must be very careful here as they may have married abt 1830 as they may be more children that have left home by 1851 Census. Also they may have both been widowed before marriage.
Cheers,
Trish