An Andrew de Wynton came over with William the Conquerer. There is a village named Winton in Northumberland, and a winton Castle in east Lothian.
This is an Anglo-Scottish locational surname recorded as De Winton, and Winton. The English surname has its origin in any one of the three places called Winton, in the counties of Lancashire, Westmoreland and the North Riding of Yorkshire. The first mentioned, recorded as "Wythynton" in the 1284 pipe rolls of Lancashire derives its name from the Olde English pre 7th Century "withig" meaning a willow wood, plus "tun", a farm or settlement. Willow was widely used for many purposes and the name suggests that the settlement may have 'farmed' the willow. Winton in Westmoreland, recorded as "Wyntuna" in the year 1090 is from the word "winn", meaning a pasture, whilst the Yorkshire Winton is recorded in the 1086 Domesday Book of 1086 and translates as "Wina's tun". The Scottish Wintons derive their name from the lands of Winton in the parish of Pencaitland, East Lothian. Early examples of the name recording include Alan de Wintoun of Soltre, Scotland in 1214, whilst Nicholas de Wynton was a witness at the Colchester, Essex, assize court in 1277 and Richard Winton in the 1524 Subsidy Rolls of Sussex. The first recorded spelling of the family name is shown to be that of William de Winton, which was dated 1202, a witness in the assize court rolls of Yorkshire, during the reign of King John, known as "Lackland", 1199 - 1216.
Winton name predates the Norman invasion is correct. Winton (a variation of this name of course)is originally of Norse origin. The name first appeared in the Isles with the arrival of Willam in 1066.
The city that is now known as Winchester was originally called Winton, possibly an Anglo-Saxon name. In 1066 the Domesday Books referring to the Winchester area were called the Liber Wintoniensis. Although the town officially became Winchester the old name of Winton persisted and a man who came from there would be called John of Winton, or (in the French manner) John de Winton. Since Winchester was a great religious centre probably many priests who trained there moved to other areas and took the name de Winton. Henri de Winton was Bishop of Verdun, France, in 1124. So it is likely that people named Winton or de Winton who had ancestors from southern England or Wales take their names from the Winchester area.
The name Winton was taken to Scotland by the de Quency family who had estates in East Lothian and Fife. Through marriage the de Quency's also had an estate in Leicester, and for services to the English king, Robert de Quency was given the title Earl of Winchester. In a document (in Latin)granting land to an East Lothian monastery in the 1190's Robert is called "Comtes Wintonie"