(1) Lorena S. Walsh, "Servitude and Opportunity in Charles County, Maryland, 1658-1705," in Aubrey C. Land, Lois Green Carr, and Edward C. Papenfuse, eds., Law, Society, and Politics in Early Maryland (Baltimore and London: The Johns Hopkins University Press, 1977), 123.
(2) Russell R. Menard, "From Servant to Freeholder: Status Mobility and Property Accumulation in Seventeenth-Century Maryland," The William and Mary Quarterly, 3rd Ser., Vol. 30, No. 1 (Jan 1973), 37-64.