Double barrelled surnames are the Victorian equivalent of the Olde English pre 7th Century compound personal names. This is to say that the individual elements have a meaning but not usually when conjoined. In this case "Lambert" is a surname derivation of the German Warriors name "Land-bright". The name in its modern form is probably Huguenot, Abraham Lamberie being recorded as marrying Alice Powkey at the Church of St. Andrew by the Wardrobe in 1578, the date coinciding with the beginning of the Protestant persecution in France. The second element of this name is a locational derivative of the North Welsh Village name "Cor-wen" near Ruthin. This in itself is very unusual, almost all original Welsh names being of patronymic form. The name derives from "Coas" - a marsh and "winn" - white. The first recorded spelling of the family name is shown to be that of Gozelinus Lameberti, which was dated 1086, The Domesday Book for Lincoln, during the reign of King William I, "The Conqueror", 1066 - 1087. 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.