He helped run his Yallum and Katnook stations, near Penola and Weinteriga on the Darling River, New South Wales,[2] which he purchased from Harrold Brothers around 1876.
He and his brother purchased Glencoe station, founded by Edward and Robert Leake, which covered 53,000 acres (21,000 ha) and featured a magnificent woolshed now held by the National Trust.
[4] At his station, near Kalangadoo, 20 miles (32 km) north of Mount Gambier, George bred Merino sheep and Hereford cattle.
He was involved in a scheme to purchase Adam Lindsay Gordon's cottage "Dingley Dell" for the nation, but failed when the property was sold privately.
Their only daughter Adelaide Mary Riddoch (28 May 1874 – 3 January 1904) married (military) Captain George Frederick Napier on 15 March 1898.