Village some 8 km South of Graaff-Reinet, in the Sundays River Valley. Named after the former owner of the Farm, NJ Adendorff, who sub-divided it into smallholdings in about 1858. Municipal status was attained in 1878.
References
New Dictionary of South African Names by Peter E Raper.
Census 2011
Further Reading
https://www.mindat.org/feature-1023644.html