 Port Deposit boomed after the Susquehanna Canal opened in 1812.Engineer James Rumsey, who grew up in Bohemia Manor before moving to Bath, Virginia (or Berkeley Springs, West Virginia), invented a steamboat which he demonstrated to George Washington, before traveling to London to secure patents against competition from John Finch.Rumsey died there in 1792, but his lawyer brother Benjamin Rumsey moved south to Joppa, Maryland and served as Maryland's Chief Justice for 25 years.