Duncan Robertson, 18th of Struan, 4th of Drumachuine and 14th Chief of Clan Donnachaidh (died 1782) (d. 1782) Parents Alexander Robertson, 3rd of Drumachuine Margaret Robertson Children Margaret Robertson Alexander Robertson, 19th of Struan, 5th of Drumachuine and 15th Chief of Clan Donnachaidh Walter Philip Robertson Partners May Marjorie Murray-Nairne