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.

Geolocation
24° 31' 4.8", -32° 18' 32.4"
References

New Dictionary of South African Names by Peter E Raper.

Census 2011

Further Reading
https://www.mindat.org/feature-1023644.html