There was a thread back in August centering on the name of Augustine's mother Monica, apparently North African, presumably Berber (if Berber isn't an anachronism).
Steven Chrisomalis' always worthwhile site Glossographia
http://glossographia.wordpress.com/
just introduced me to Epigraphik Datenbank, a truly impressive source for Latin inscriptions. Going to
http://compute-in.ku-eichstaett.de:8888/pls/epigr/epigraphik_en
and putting "Monica" in the search window comes up with thirteen gravestones, one in Rome and the rest in Africa.