Jonathan Plowman Jr. (1717–1795) was a spy and a privateer during the American Revolutionary War. His spying activities were as part of a group of Revolutionaries who reported on British troop movements. After the war broke out and trade with Britain was halted, Plowman and other merchants of Baltimore became privateers. They took their merchant ships and sent them out to raid and plunder British commerce enriching themselves and Baltimore.[1] His resistance to British rule began earlier than that when, as a prominent merchant in Baltimore, Jonathan Plowman Jr. signed the non-importation agreement along with other merchants throughout the 13 colonies in a united effort to resisted British taxation and abuses.[2] His sons fought the British redcoats on the battlefield as members of both the regular army and the Maryland Militia. Jonathan Plowman Jr's many accomplishments ranged from a town commissioner member,[3] an attorney,[4] and justice of the peace.[5] He was also a Freemason[6] and a developer[3] laying out streets and lots and having the land added to Baltimore. Most of all he was a successful merchant,[5] and owned at least one ship named Pokomoke[7] and trading in goods including indentured servants. Plowman's own father was shipped to the United States at age 12 as an indentured servant. Jonathan Plowman Jr. became a member of the town commission of Baltimore, Maryland, prior to and served during the American Revolution.[8] Many references to Jonathan Plowman may be found in the Maryland Archives, as he participated in town business and ran afoul of the British more than once. Jonathan Plowman Jr. usually signed "Jon" Plowman on documents such as the records of the many indentured servants he imported to the Americas.[9]