Here are some statistics concerning the surname Knock and a list of some of the the most common names in South Africa that contain it.
Frequency: 0.0028%
Approximate number of South Africans that have this surname: 1456 MD5 Code: 3b5b8ec2903478fc081f603bd704f9be SHA1 Code: b38148cb9fd3994f2db25a2af39907d35082013f