Continuing my fascination with African-American naming trends, I found this site about a brief history of African American names:
Finding Our History: African American Names.
Creating new names out of old names has been a long-standing tradition in African American culture. Long before there were LaTanyas, Donnelles and Andraes, there were Samanthas (Sam + -antha bet you didn't know this was a 200-year-old African American creation!), Authorine (the first African American student at a white university in Alabama), Araminta (Harriet Tubman's first name at birth), & Cabell (Cab Calloway's birth name).
Another site about the importance of names in both African American and African culture:
Slavery in America: African American Names