This is a slightly anglicized spelling of one of the earliest of French Huguenot emigre names which appeared in England from 1630 onwards following "the revocation of the Edict of Nantes". The name in any spelling is rare, the origin is believed to be from "Leuren" a name recorded heraldically, from the Flemish/Dutch Regions of Brabant and Rotterdam. The name development and recordings include Abraham Lerven who was baptised on November 30th 1645 at Threadneedle street, London, Robert Lerwen who married Clara Everard at St. Agnes Church, Aldergate in 1738, whilst in 1835 George Larvent married Frances Brown at Bethnal Green on April 21st 1833. The first recorded spelling of the family name is shown to be that of Monslo Lerven, which was dated 1645, a witness at Threadneedle Street, Huguenot Church, London, during the reign of King Charles 1, known as "The Martyr", 1625 - 1649. Surnames became necessary when governments introduced personal taxation. In England this was known as Poll Tax. Throughout the centuries, surnames in every country have continued to "develop" often leading to astonishing variants of the original spelling.