Glad I could help. Unusual name isn't it? Do you know where it comes from?
It is tricky to find them in the censuses because they are either mistranscribed in the index or written as Potts in the first place

I thought I would look for some in Willenhall and I think I have Thomas in 1861.
1861Willenhall
High Street, Portobello
Thomas Potto,head,m,65,saddler,Bedford,Reynold
Rg9-2000/134
I wonder if this is his wife staying at another son's?
1861Walsall St,Willenhall
Thomas Potto,head,unm,30,saddler,Staffs,Westbromwich
George Potto,brother,unm,27,saddler,Staffs,Westbromwich
Elizabeth Potto,mother,m,63,Harbury
Rg9-1999/54
187133 Walsall Street,Willenhall
Elizabeth Potto,head,w,73,Warwickshire,Seth?
Thomas Potto,son,unm,40,saddler master,Staffs,Westbromwich
George Potto,son,unm,27,saddler master,Staffs,Westbromwich
Eliza Bates?,niece,unm,20,domestic servant,Staffs,Aldridge
William Potto,visitor,m,56?,cordwainer,Staffs,Hanley
Rg10-2942/52
1891Ct 5 Walsall St,Willenhall
Thomas Potts, head,m,57,saddler,Staffs,West Bromwich
Ann Sophia Potts,wife,m,49,Staffs,Bloxwich
George Potts,son,12,scholar,Staffs,Willenhall
Blanche Potts,dau,11,scholar,Staffs,Willenhall
William Coleman,father in law,w,75,retired carpenter,Staffs,Willenhall
Willie Coleman,nephew,s,25,saddler,Staffs,Willenhall
Mary Ann Hanley,serv,s,16,general servant domestic,Staffs,Willenhall
Rg12-2237/45
19016 Walsall St
Thomas Potto,head,m,68,saddler,Staffs,West Bromwich
Ann S Potto,wife,m,59,Staffs,West Bloxwich
Blanche S Potto,dau,s,21,Staffs,Willenhall
Willie Hamlett,nephew,s,36,saddler,Staffs,Willenhall
Kate French,serv,16,general servant domestic,Glos,Bristol
Rg123-2684/50
There is also a Thomas Potto saddler listed at Church St Willenhall in the 1851 Melville and Co Directory of Wolverhampton
And a Henry potto saddler at Park St Walsall in 1851
You can search for them at
http://www.historicaldirectories.org/hd/findbykeyword.aspby putting Staffordshire in as location and Potto as the keyword

Let me know if you would like any more census details.
All census information is Crown Copywright