 He was successfully involved with establishing the oilfield on the island of Tarakan, north of his earlier exploits, but health concerns prompted him to return to Scotland, where he bought the estate of Balintraid.At the time of his death he held shares in both oil and timber concessions at Tarakan, some of which gave rise to court proceedings by his son, Edward Frankland Cameron.Cameron's grandson, Sir Magnus Cameron Cormack, became President of the Australian Senate.