Looks like William was Married before also.
But where are Lavinia and Joseph Samuel in 1851?
Hopefully somewhere else with Grandparents on either Family side.
Everything else seems to match as Edward is with Susanna, Lavinia and Joseph S in 1861.
1851 Census
5 castle Hill/Mill Street,
Crown and Mill/Hill?,
Bristol castle Precincts,
HO107/1948/306/2
William ALDEN, 52, Head, Mar, Victular
Susanna, 32, Wife, Mar,
Ann, 20, Daug,
Nelson, 17, Son,
Ellen, 14, Daug,
LAWRENCE, 3, Son, born Bristol
THOMAS, 6mths, Son, born Bristol
Susan EDWARDS, 17, Sister in Law
EDWARD, 7, Son in Law
+ 5 others in Household
All the Aldens/Edwards born Bristol and environs
Son/Daug in Law means Step Child.
NELSON was Christened 02 Feb 1834 to William and ELEANOR
William ALDEN married Eleanor UPTON, 08 March 1828, St James Parish, Bristol, Gloucestor
Trish
