This is a shortened variant spelling of the English Grandison, itself a drivative of the Swiss "Grancione", and first brought to England by Otes de Grandison in c.1320. The move was brought about through the marriage of Henry III to Eleanor of Provence and the subequent move to England of her Courtiers of whom "Grandison" was one. The name development has included Peter de Grandisson (1335, Warwickshire) and Roger Graundison (1397, Yorkshire), whilst John Grandison (c.1365) was Bishop of Exeter. The first recorded spelling of the family name is shown to be that of Rigaldus de Grancione. which was dated C.1040, The Village of Granson, Neuchatel. during the reign of King Hardicanute of England, 1040 - 1042. 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.