Hi Kris,
I have two families in the 1851 census of Devon with your surname of interest but they do not match your other requirements, they are.
Address : West Street, Tavistock
Census place: Tavistock tavistock, Devonshire.
Pro ref # HO/107/1883 Folio 409 page 9
John W FLAMANK, head, m, 39yrs, M, General Draper, born Tavistock, DEV.
Mary, wife, M, 31yrs, F, Drapers Wife, born Whitchurch,DEV.
Constance M, daur, 8yrs, F, Scholar, Tavistock,DEV.
Louisa E, daur, 5yrs, F, Scholar, Tavistock,DEV.
Marian, daur, 2yrs, F, Tavistock,DEV.
Rose, daur, 1yr, F, Tavistock,DEV.
Elizabeth BEVAN , Appr, U, 16yrs, F, Draper Apprentice, Lifton, DEV.
Jane A GRUZELIER, Appr, U, 18yrs, F, Draper Apprentice, Stonehouse, DEV.
Louisa PROUT, Appr, U, 20yrs, F, Draper Apprentice, Milton Abbott, DEV.
Elizabeth RICHARDS, Serv, U, 21yrs, F, House Serv, Breage, CON.
Ellen SYMONS, Serv, U, 28yrs, F, House Serv, Tavistock,DEV.
Mary PHILLIPS, Serv, U, 29yrs, F, House Serv, Walkhampton, DEV.
Address: Abby Mead No3, Tavistock
Census Place: Tavistock Tavistock, Devonshire
Pro ref # HO/ 107/1883, Folio 559, Page 2
Jno FLAMENK, head, M 62yrs, M, Retired Linen Draper, born Plymo- Dev.
Elizabeth, wife, M, 60yrs, F, Bedmin-- Dev
Ellen, daur, U, 31yrs, F, Tavistock, Dev.
I think the first entry might be the son of the second.
Hope this is of use to you.
Cheers
Geoff