I was browsing some discussions on Anestry about the first Tait to come to South Africa from Scotland. And someone mentioned Dr. William Tait came over in 1820 and had a brother in the Cape of Good Hope who would send him letters. Here is a link to the website.
http://www.eggsa.org/1820-settlers/index.php/t-menu/1184-%20.html
It would be nice to find out where he fits in and add his profile to this project
Michael