Hi Deb, the family I found in the 61 census I have found in the 71, I do not think it is your Thomas as it states that he is unmarried. There is another Penfold family living next to them, I don't know if it will help but here are the details
Robert Penfold 55 born Bremmer, Wilts a brush maker and licensed hawker
Amelia 53 born not known
Thomas 22 born Devon a brush maker and licensed hawker
Harry 15 born Ilchester, Somerset " " "
Robert 20 born Shapwick, Devon " " "
Hollif 18 born Woolbridge, Dorset a licensed hawker
Elizabeth 13 born Dorchester, Dorset " "
Pricilla 11 born Leigh, Dorset
William Penfold 38 born Hampshire a brush maker and licensed hawker
Pricilla 39 born not known a licensed hawker
Pricilla 16 born Portsmouth, Hants " "
Charlotte 15 " " "
Amos 8 born Hampshire
Henry 6 "
Hollif 5 born Portsmouth, Hants
Patience 3 "
Rachel 1 "
Patience Tomson 22 born Sussex a licensed hawker and sister-in-law.
living Near Seaway Lane, Abbotsbury, Dorset.
Regards
Kate.