Those of us who search through Scots-Irish genealogical records eventually find that there was intermarrying between black slaves (or black indentured servants) and white indentured servants. In the late 1700s, a family of Indians still held a piece of Indian land. After the men died, the Indian women mixed with black slaves. When they sought title for the land, they were denied because the families remaining had more black than Indian blood and the authorities did not believe they deserved title to Indian land. When stories of oppression reached the ears of other mixed-blood families, they began referring to themselves as Black Dutch, Black German or Black Irish. I don’t know if that would have helped them retain their Indian lands but it may have helped protect against harassment. There was a vast difference between the future opportunities available to white indentured servants and those available to black slaves (if there were any). For those of us seeking the origins of our ancestors, these issues should be considered.
Suellen Ocean is the author of Secret Genealogy IV – Native Americans Hidden in Our Family Trees. Available here: http://www.amazon.com/Secret-Genealogy-IV-Native-Americans/dp/1500756105