and why in 1861 if Mary is married does she change back to Mary Smart?
1850
SMART Mary ISABELLA John Dudley, St John The Evangelist, Kates Hill Dudley Register Office 203/001/219
1841 Mamble Dudley
John Isabell 45 whitesmith
Mary Isabell 40
John Isabell 14
Sarah Isabell 10
Laura? Isabell 6
Emanuel Isabell 3 mths
all yes born in County

1851 Mamble Dudley
John Isabell? head married 60 whitesmith
Mary Isabell? wife married 50
Emmanuel Isabell? son 14 fendermaker
Caroline Isabell? dau 8
William Lilly son in law married 22 miner coal
Sarah Lilly Son in laws wife 20 screw maker
James Lilly grandson 9 mths
all born dudley
1861 Mamble Dudley
Mary Smart head wid 62
Emanuel Smart son unm 22
Caroline Smart dau unm 20 nail maker
/William Lilly head married 33 Coal miner
Sarah Lilly wife mar 32
Edward Lilly son 8 scholar
Sarah Ann Lilly dau 5
John Lilly son 2
all born Dudley
????
1871
13 Bailey Street Tipton Staffs.
Joseph Smart head wid 52 Coal miner Worcs. Dudley
Mary Smart mother wid 74 Pauper
John Cooper son in law mar 25 coal miner Staffs. Bilston
Mary Ann Cooper mar dau 24 b Tipton
Joseph Smart Son 21 unmarried coalminer
Emanuel Smart son 11 Coal miner
Charles Cooper Grandson 2
all others born Tipton