How far south-west of Inverness is the castle of which Robert Lauder of Quarrelwood was Captain located?
Robert Lauder of Quarrelwood:  He is recorded by Fordun, in his "Scotichronicon", and in "Extracta ex variis Cronicis Scocie" as "Robertus de Lavedir 'the good'" Urquhart Castle:  The castle is on the A82 road, 21 km south-west of Inverness and 2 km east of the village of Drumnadrochit.
21 km