The existence of Lambroch Mill is shown up until 1775 (Armstrong, scale 1.0 inches to 1 Mile), however the positioning is not near the river and unless the Lochridge (formerly Lochrig) burn was used to fill a millpond then the site was probably on the River Annick (previously Annoch (1791–1793), Annock or Annack Water) near where the farm of Laigh Castleton (formerly Nether Castleton) is situated.