What area of Scotland is the surname Irving most likely from?

Question:

What area of Scotland is the surname Irving most likely from?

Best Answer - Chosen by Asker: "Eriwine" and "Erwinne" are old English first names, derived from the Brittonic "ir afon" meaning "green water". It became the name of a parish in Annandale in Dumfriesshire and also in Ayrshire (where the town of Irvine has prospered). The first recorded reference in Scotland is Gilchrist, son of Eruini, who witnessed a charter in Galloway in the 12th century. However, family tradition claims that the chiefly branch originated through the lay Abbots of Dunkeld from the High Kings of Ireland.