Welcome to GC!
Yes, there certainly are women of African ancestry in Delta Gamma!
I remember in the late 1980's that the UBC chapter in Vancouver, Canada had 2 African-Canadian members. One DG was named Darcia and the other DG was Angela (I think that was her name...this was a few years before my time).
I am pleased and proud to say the UBC DG chapter is strong and diverse today, with women of Persian origin, Jewish faith, Asian origin, Indo-Canadian origins and multi-ethnic origins.
Yes, it is great to be a DG!