Of all the activities connected with the system of American Negro slavery, one of the less documented and less well-known aspects is that of free Negroes who purchased and owned slaves. (Generally it is believed that the majority of free blacks who owned slaves purchased them for reasons of personal interest and involvement. There are known examples of free black husbands who bought their slave “wives” as well as instances in which the reverse took place. In other recorded cases, the slaves were the children of a free-slave “marriage.” In still others, relatives and friends similarly were rescued from the “peculiar institution.” Also, there are documented references to some few instances in which free blacks apparently engaged in buying and selling slaves for economic gain.
Klingman, Peter D.
"A Florida Slave Sale,"
Florida Historical Quarterly: Vol. 52
, Article 7.
Available at: https://stars.library.ucf.edu/fhq/vol52/iss1/7