Hi, Louisa
Is this the John you're after or is this the son ?
1851 Salford, Greengate Unfilmed
23 Paradise Row
TOWNSEND
John Head M 43 Soda Water Manufacturer Derby
Ellin Wife M 39 Derby
Elvina Dau 9 Scholar Manchester
Caroline Dau 3M Salford
Elizabeth Mother W 73 Servant? Todwich, York
Richard Servant? U 47 Labourer Toddington, Derby
+ 5 Servants
Hope this helps
Regards, Dave