here is your mary ann on the 1861 cencus -
Benjamin Whitmore abt 1860 Dudley, Worcestershire, England Son Dudley Worcestershire
Elizah Whitmore abt 1847 Dudley, Worcestershire, England Son Dudley Worcestershire
Hannah Whitmore abt 1851 Dudley, Worcestershire, England Daughter Dudley Worcestershire
John Whitmore abt 1843 Dudley, Worcestershire, England Son Dudley Worcestershire
Lucretia Whitmore abt 1856 Dudley, Worcestershire, England Son Dudley Worcestershire
Mary Whitmore abt 1817 Rowley, Staffordshire, England Wife Dudley Worcestershire
Mary Ann Whitmore abt 1854 Dudley, Worcestershire, England Daughter Dudley Worcestershire
Sarah Whitmore abt 1849 Dudley, Worcestershire, England Daughter Dudley Worcestershire
William Whitmore abt 1814 Dudley, Worcestershire, England Head Dudley Worcestershire
William Whitmore abt 1845 Dudley, Worcestershire, England Son Dudley Worcestershire
regards
alli