Mary Ann {Simpson}

I thought she might be Mary Ann Robinson, as the name, age and birthplace match, and there seems to be only this Mary A. of that age from Redcar in the census up through 1861, and then we have Mary A. Simpson, starting in 1871. However, Mary Ann seems to be still with the Robinsons in 1871, though her age is suddenly off by 10 years. Unable to find any marriage records for Henry and Mary Ann. Possibly Mary Ann Robinson, who was living in Kirkleatham in 1861. Age, name & place of birth match.