The history of the Clan Forsyth dates back to before the twelfth century and as is usually the case with families who date back this far, the derivation of the family's surname is uncertain. If the name is of Celtic origin, then it may derive from Fearsithe, which is Scottish Gaelic for man of peace. However there is a tradition that gives a Norman origin from Forsach, who was amongst the Norsemen who settled on lands on the River Dordogne in Aquitaine, France. The Viscomte de Fronsoc accompanied Eleanor of Provence to marry Henry III of England in London and from 1236 to 1246 lived at the English court. This family are believed to have obtained lands in Northumberland and from there moved to the Scottish Borders.