Not indentured servants, but white slaves.
Those were the vagabonds, beggars and people who were in the poor houses in the UK and were ordered out in the 1600s.
Indentured servitude wasnt that much different.
About 15-20 years archeologist found a body in one of the old colonial houses in Annapolis.
The body was a young man in terrible condition so they assumed it was a slave.
When the genetic testing came back they found out he was white and it was felt that he must have been an indentured servant.
I was told during a tour of Williamsburg that slave ownership by free blacks was roughly the same percentage as white owner.