Bev,
The 1851 Salford census is quite badly damaged and the Peel St area is particularly bad. I checked all the indexes I have (not complete Salford - excludes Broughton and parts of Regent Road) but found no Benjamin or Hannah Featherstone.
This partial entry from Peel St is a possibility:
HO107/2222/
Enumeration district:1E
Page 23
Sched 89
Peel Street (no number)
Head, M, -
DITTO Wife ,M, -, Ditto Ditto
John DITTO , -, Ditto Ditto
DITTO -, Ditto Ditto
Elizabeth DITTO , -, Ditto Ditto
John , -, Ditto
Not much help I'm afraid.
The only other Featherstone's I found are these:
HO107/2223/
Enum Dist 1FF
Page 19
Sched 107
20 Chapel Street
Wm. ASTLEY Head 46 Inn Keeper Master Lancashire Bolton
Eliza ASTLEY Wife 42 Lancashire Manchester
Martha M. ASTLEY Dau 13 Scholar Lancashire Manchester
Rebecca E. ASTLEY Dau 11? Scholar Lancashire Manchester
Wm. K. M. ASTLEY Son 9 Scholar Lancashire Manchester
Lucia M. ASTLEY Dau 6 Scholar Lancashire Manchester
Eliza E. ASTLEY Dau 3 Scholar Lancashire Manchester
Robert P. ASTLEY Son 5M Lancashire Salford
Elizh. BICKERTON Servant U 26 Barmaid Shropshire Wellington
Jane STEPHENSON Servant U 24 House Serv. Lancashire Tarlton
Margaret JONES Servant U 22 House Serv. Lancashire Cheetham
Mary POWER Servant U 27 House Serv. Lancashire Salford
Eliza FEATHERSTONE Servant U 18 House Serv. Dublin - British Subject
Andrew HEWITT Visitor M 28 Chemist Northumberland Bassendean
Amorias SUTTON Visitor W 65 Horse Dealer Derbyshire Tideswell
HO107/2223
Enumeration District: Workhouse
Page 4
The Salford Union Workhouse
Elizabeth FEATHERSTON Inmate M 61 Frame Tenter Factory. Middlesex London Hyde Park Corner
(Her poor mother!. Don't think I'd fancy giving birth at Hyde Park Corner)