They brought with them Saxon Merino sheep, cattle, and broke horses nearby at Lake Leake establishing the Inverary run with Adam Lindsay Gordon.

[4][5][6] In acquiring the land, the Leake brothers soon came into conflict with the local Aboriginal people, killing one or two in a skirmish in late 1844.

[7] In 1845, Leake with six other armed horsemen gave battle to a group of around 200 Aboriginal people who had taken a large number of sheep, and dispersed them after a couple of shots.

[10][11] In 1846, the cadastral unit County of Grey, and subsequent Hundred of Young was proclaimed by the then Governor Frederick Robe.

[12] The former District Council of Tantanoola annexed the settlement from Mount Gambier West by virtue of the Local Government Areas (Re-arrangement) Acts 1929 and 1931, effective from 23 May 1932.

The Glencoe Woolshed is a heritage listed, 36 stand, sheep sheering shed built in 1863 by brothers Edward and Robert Leake.

Constructed from local limestone and hand-hewn hardwood timber, it has been maintained in its original condition and now serves as a museum.

Surrounding Glencoe are pine tree plantations used in the production of paper pulp and for the supply to sawmills in the area.