I have had a look on the 1851 for Devon and only found this Ambrose Barratt born 1812, but he is married to a Mary and has a son William
23 Banawell Street, Waterloo Place, Tavistock
Tavistock, Devon
HO/107/1883 folio - 486 page - 3
Ambrose Barratt, head, married, 39,male, miner,Tavistock
Mary Barratt,wife, married, 39, female,miners wife, Tavistock
William Barratt,son, unmarried, 17,male,miner, Tavistock
Elizabeth Barratt, daughter, 15,female,at home, Tavistock
Ambrose Barratt,son, 13, male,works at mine, Tavistock
Richard Barratt,son, 11, male, scholar, Tavistock
Thomas Witford Barratt, 7,male,scholar, Tavistock
Nicky