So are you saying this 1851 census entry is incorrect?
'In 1851 Thomas was with Sarah and the two children.'
1851 census HO107 1497 folio 63
45 Bayham Street St Pancras Middlesex
Thomas Sayer 24 Brighton Head Married Journeyman Bricklayer
Sarah Sayer 18 Pancras, Middlesex, Wife Married
Sarah Sayer 10mths Pancras, Middlesex, Daughter
The Kungfu magazine says there was a three year gap between Thomas' daughter Sarah and his son Thomas. The 1861 census does not show either child with Thomas or with Sarah. Sarah's age and place of birth on the 1861 and 1871 censuses is compatible with the details of the 1851 census above.
1861 census RG 116 folio 146
10 Belle Vue Cottage St Pancras Middlesex
Thomas Sayers 35 Brighton, Sussex, Head Married PUGILIST Champion of England!!!
Charlotte Sayers 24 Uckfield, Sussex, Wife Married Housekeeper
Peter Sayers 12 Sussex, Son
There is a Thomas and Sarah Sayers aged 10 and 11, birthplace unknown, boarding in the equivalent of a 'Dame school' in Finchley on the 1861 census.
1861 census RG115 folio 45
1 York Street St Pancras Middlesex
James Aldrige 40 Pancras, Middlesex, Head Unmarried Cabdriver
Sarah Sayers 28 Pancras, Middlesex, Visitor Married Mangling
James A Sayers 1 Pancras, Middlesex, Son
1871 census RG10 249 folio 31
34 Peckwater Street St Pancras London
James Aldridge 50 London, Middlesex, Head Married Cabman
Sarah Aldridge 36 London, Middlesex, Wife Married
James A Sayers 11 London, Middlesex, Son
Alfred A Sayers 9 London, Middlesex, Son
Charles A Sayers 7 London, Middlesex, Son
Robert A Sayers 5 London, Middlesex, Son
Maria Bond abt 1804 London, Middlesex, Sister Widow
1871 census RG10 222 folio 39
5 Melton Street St Pancras London
Charlotte Sayers 42 Bristol, Sussex, Head Married Tobacconist
William Francis Olrod 45 Sanchall, Surrey, Lodger Piano forte maker
1881 census RG11 199 folio 28
5 Melton Street St Pancras London
Charlotte Sayers 53 Busted, Sussex, Head Widow Tobacconist
William Olrod 54 London, London, Middlesex, Boarder Widower Piano forte maker
Emily H. Sayers 9 London, Middlesex, Granddaughter
plus 1 boarder
Regards
Valda