i have your maria in 1861 if that helps but no luck so far on her parents sorry 
John Knowles abt 1820  Old Swinford, Worcestershire, England Head  Cradley  Worcestershire    
Maria Knowles abt 1819  East Indies Wife  Cradley  Worcestershire    
Richard Knowles abt 1840  Old Swinford, Worcestershire, England Son  Cradley  Worcestershire    
William Knowles abt 1851  Old Swinford, Worcestershire, England Son  Cradley  Worcestershire 
the only mobberleys still in west lye are these - 
Eliza Mobberley abt 1812  Lye, Worcestershire, England Wife  Stourbridge  Worcestershire    
Eliza Mobberley abt 1853  Lye, Worcestershire, England Daughter  Stourbridge  Worcestershire    
Hy Mobberley abt 1847  Lye, Worcestershire, England Son  Stourbridge  Worcestershire    
Richard Mobberley abt 1808  Lye, Worcestershire, England Head  Stourbridge  Worcestershire    
Thomas Mobberley abt 1851  Lye, Worcestershire, England Son  Stourbridge  Worcestershire  
richard may be a brother for maria???
or maybe this william poss being of the right age for her father???
Catherine Jones abt 1836  Liverpool Servant  Lye  Worcestershire    
Ann Mobberley abt 1794  Lye, Worcestershire, England Wife  Lye  Worcestershire    
Samuel Mobberley abt 1820  Lye, Worcestershire, England Son  Lye  Worcestershire    
William Mobberley abt 1796  Lye, Worcestershire, England Head  Lye  Worcestershire 
hope this helps some
regards
alli