One of the first but hard to say whether or not the official first known black slave owner was a black man who appeared on the records by the title,
Antonio a Negro, and who was named Anthony Johnson.
Johnson resided in Virginia where the colonial law or system of Headright law was enforced.
Headright was a colonial method by which indentured servant labor would be transported to the Virginia colonies to work and expand the realm. Meanwhile, those who sponsored the indentured servant under contract for any number of years, usually not to exceed seven years, received in exchange 50 acres of Virginia land for every indentured servant in their service.
This is how Johnson claimed 250 acres of land in 1651. He had in his service five indentured servants.
He became known outside of Virginia, which could be why he's thought to be one of, if not the, first black man to own slaves in America, (there is a difference between slaves and indentured servants), when he took his neighbor, Robert Parker , to court on the charge of taking his property, i.e. Mr.Casor.
Seems Mr. Johnson had in his service an indentured servant named John Casor. Mr.Casor ran away and to Mr.Robert Parkers nearby farm. His claim being Mr.Johnson had exceeded the term of Mr. Casor's indentured servitude, which was that 7 or possibly 8 years.
This was not a valid claim as there was evidence Mr.Casor had only entered into his indenture four years prior to running away to Mr.Parker's.
This court case was the first court case in the colonies wherein a black man went to court to press his rights as a owning indentured servants or slaves.
The final decree of the court was that Mr.Casor was to be returned to Mr. Johnson. While Mr. Parker was to make all payments related to the cost of prosecuting the case. This would be what we know today as , court costs.
Wan't the first slave owner in the US black (something people fail to realize is there were plenty of black slave owners)? Also people forget (or rather ignore) about the barbary slave trade, in their ramblings of how evil white people are.
We're living in a time where the Oppression Olympics reign free.