Hi druschki,
Have checked the 1851 census for Barrett of Bawdeswell and there was only one birth there in 1833 for a William Barrett, have included all the Sarah Ann Barrett's born in Norfolk around the time you want,there are no Sarah Ann Barrett's born 1842,I hope they help.
James BARRETT Head M 45 M Ag Labr Wreningham-NFK
Susan BARRETT Wife M 42 F --- Ashwellthorpe-NFK
Isaac BARRETT Son U 18 M Ag Labr Ashwellthorpe-NFK
David BARRETT Son - 15 M Ag Labr Ashwellthorpe-NFK
Sarah Ann BARRETT Daur - 11 F Scholar Ashwellthorpe-NFK
Sophia BARRETT Daur - 8 F Scholar Ashwellthorpe-NFK
Emma BARRETT Daur - 6 F Scholar Ashwellthorpe-NFK
Alfred BARRETT Son - 2 M --- Ashwellthorpe-NFK
Ashwellthorpe Depwade
HO/107/1821 Folio 798 Page 17
Wm. BARRETT Head M 32 M Ag Lab Cranworth-Nfk
Charlotte BARRETT Wife M 29 F --- Weasenham-Nfk
Isaac BARRETT Son - 6 M Scholar Reymerston-Nfk
Sophia BARRETT Daur - 4 F --- Reymerston-Nfk
Geo. BARRETT Son - 2 M --- Reymerston-Nfk
Sarah Ann BARRETT Daur - 3 F --- Reymerston-Nfk
Mitford
Reymerston Mitford, Norfolk
HO/107/1824 Folio 151 Page 15
Henry BARRETT Head M 29 M Bricklayer Castleacre-Nfk
Maria BARRETT Wife M 30 F --- Fincham-Nfk
Emily WEASENHAM Daur U 8 F --- Fincham-Nfk
James BARRETT Son U 2 M --- Fincham-Nfk
Sarah Ann BARRETT Daur U 9m F --- Fincham-Nfk
Sarah WEASENHAM MotL W 61 F Pauper Fincham-Nfk
Elizabeth WEASENHAM SisL U 18 F --- Fincham-Nfk
Alice WEASENHAM SisL U 16 F --- Fincham-Nfk
Downham
Fincham Downham, Norfolk
HO/107/1830 Folio 675 Page 35
Michael BARRETT Head M 37 M Ag Lab Swanington-Nfk
Elizabeth BARRETT Wife M 37 F --- Swanington-Nfk
Emily BARRETT Daur - 14 F --- Swanington-Nfk
Christopher BARRETT Son - 5 M Scholar Swanington-Nfk
Elisha BARRETT Son - 2 M --- Swanington-Nfk
Sarah Ann BARRETT Daur - 5m F --- Swanington-Nfk
Mary Ann GEORGE Vist U 22 F Dressmaker Shipdham-Nfk
St Faiths
Swannington Norfolk
HO/107/1811 Folio 76 Page 19