4 July 1730 Elias De Clerc of Saint Giles Field Middlesex Watch Case Maker paid apprentice indenture duty for Francis son of John Snider of Saint Ann's Westminter.
2 May 1747 Isaac Berthon will proved in London. Elias Le Clerc of Compton Street Leicester Square Middlesex Watch Case Maker son of Alexander Le Clerc and Jane (Berthon) cousin of Isaac Berthon named in this will. Reference: TNA/PROB 11/754/179