The manner belonged to Robert (brother of Lambin who gave his name to Lamington) during the reign of Malcolm IV, and it was from him the name was taken.
A charter, granted at Lesmahago by Hugh, son of Robert, son Waldeve de Bigar, was witnessed by Robert of Robertstun in 1228.
In 1296, Steven de Roberton of the county of Lanark render homage to England’s Edward I, and, sometime between 1304 and 1305, Master Stephen de Rodberdeston, or Roberdestone, was clerk to Sir James Dalilegh.
John of Monfode was given the lands of Robertstoun in Lanarkshire by Robert I at sometime before 1329.
A charter by William de Conynghame in 1365 was witnessed by John Robardston, and in 1390, the lands of Auchinleck, in the barony of Renfrew, were resigned by John de Robertun of Ernoksaunfoy.
In 1408, Stephen de Roberton was granted letters of safe conduct to travel from Henry IV of England. In Glasgow, in 1440, John de Robertoun was presbyter, and, in 1487, the lands of Modervile (now Motherwell) were owned by John of Robertone of that Ilk.
It is said that Roberton of Earnock was reputed chief of the name in his day. The name often mistaken for Robertson, and was mistakenly referenced as “MacRoberton” in the Register of the Privy Council in 1600.