This is northern English and a Scottish name, locational in origin from any of the various places in Cumberland and the Scottish Border counties which are called "Lidel". The placenames derive from the Olde English pre 7th Century river name "Hlyde", meaning a"loud roaring stream, a torrent" and "dael" meaning a valley, so as a distinguishing surname. "Liddel(l)" would denote someone who lived by or near the valley of the River Hlyde. Locational names were usually given to those who moved from their original habitation to live or work in another village or area. The modern surname has a number of variants, from Lydall, Lidell and Liddle to Leedal and Leadle. The marriage of Orlando Leedal and Mary Galley was recorded on the 22nd May 1664 at St. Botolph, Bishopsgate, London. The first recorded spelling of the family name is shown to be that of Richard de Lidel. which was dated 1202, charter witness of the Church of Hargs. during the reign of King William, the Lion of Scotland, 1165 - 1214. 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.