Recorded in several forms as shown below, this is an English surname. It is locational from the place called Bleasdale in the county of Lancashire, in the region known as The Lake District. The placename is recorded in the Lancashire Close Rolls of 1228 as "Blesedale", and the name translates from the pre 7th century Old Norse word "blesi", meaning a light spot, used here in the sense of a cleared space suitable for agriculture, and the suffix "dael", meaning a valley. Locational surnames were usually given to the lord of the manor and to those former inhabitants who moved to another area. The modern spellings of the surname include Bleasdale, Blaisdale, Blasdale, Blasdell, Blaisdell, Bleasdille, and others. Early examples of the name recordings include the marriage of John Belasdale to Mabell Parke on the 11th June 1590 at Chipping, Lancashire, whilst even earlier we have that of Henry Bleasdale who was christened at North Whalley in the Trough of Bowland, on June 1st 1546. This was during the reign of King Henry VIIIth of England (1509 - 1547). Throughout the centuries, surnames in every country have continued to "develop" often leading to astonishing variants of the original spelling.