 The Thames locks began to appear late in the 18th century, 'Moulsey' (today called Molesey) was built in 1815.Boyle Farm was in the 19th century the property of the 1st Lord St Leonards (1781—1875), a jurist (legal researcher and publisher), barrister, and Lord Chancellor.Until the 20th century Thames Ditton Island was part of Middlesex, and then of Greater London from 1965.