In 1870-72, John Marius Wilson's Imperial Gazetteer of England and Wales described Blandford St Mary like this:
BLANDFORD-ST. MARY, a parish in Blandford district, Dorset; on the river Stour, adjacent to the Dorset Central railway, ½ a mile S of Blandford-Forum. It has a post office under Blandford. Acres, 1,583. Real property, £2,747. Pop., 409. Houses, 77. The property is divided among a few. The living is a rectory in the diocese of Salisbury. Value, £313.* Patron, Worcester College, Oxford. The church was built by Governor Pitt, grandfather of the great Earl; and contains several monuments of his family. Dr. Brown Willis, the antiquary, was a native.
Blandford St Mary is now part of North Dorset district. Click here for graphs and data of how North Dorset has changed over two centuries. For statistics about Blandford St Mary itself, go to Units and Statistics.
GB Historical GIS / University of Portsmouth, History of Blandford St Mary in North Dorset | Map and description, A Vision of Britain through Time.
Date accessed: 29th March 2017
Click here for more detailed advice on finding places within A Vision of Britain through Time , and maybe some references to other places called " Blandford St Mary ".