First found in Wiltshire where they were anciently granted lands by William Duke of Normandy for their assistance at the Battle of Hastings in 1066 A.D. Geoffrey de Mandeville (c.1100) was an important Domesday tenant-in-chief; he was granted large estates in Essex, and in ten other shires by William, and was Constable of the Tower of London. They were granted no less than 118 Lordships after the Conquest. William's descendent Geoffrey de Mandeville (d. 1144,) was created the 1st Earl of Essex., a title which became extinct in the 12th century after the death of the 3rd Earl. The chief seat of the Mandevilles was at Walden in Essex, but many junior lines abounded. "Jehan de Mandeville", translated as "Sir John Mandeville", was noted as the compiler of a singular book of supposed travels, written in Anglo-Norman French, published between 1357 and 1371. They were Lords of the Manor of Earl's Stoke, in Wiltshire and also were granted lands in Devon.

Because of the political and religious discontent in England, families began to migrate abroad in enormous numbers. Faced with persecution and starvation at home, the open frontiers and generally less oppressive social environment of the New World seemed tantalizing indeed to many English people. The trip was difficult, and not all made it unscathed, but many of those who did get to Canada and the United States made important contributions to the young nations in which they settled. Some of the first North American settlers with Mainville name or one of its variants: Gillis Mandeville, who settled in New York in 1659; Miss Mandeville settled in Barbados in 1774; Mary Mandeville settled in Maryland in 1738. In Newfoundland, Canada, Patrick Mandavile from Clonmell, Tipperary, was married in St. John's in 1805.

For more information on the last name Mainville, the PDF Surname History is available for purchase as well as other products.