On a remote edge of the Eastern Shore’s broad oceanside marshes in Northampton County is the surprisingly urbane Federal-style residence of Brownsville, built in 1806 for John Upshur. Upshur’s ancestor John Browne, from whom the property derives its name, patented the land here in 1652. In 1809 Upshur added a long wooden wing to Brownsville to accommodate visiting relatives. The side-passage brick house is one of several Eastern Shore Federal-style houses boasting design, construction, and detailing of highest quality. A novel interior feature is the unusually wide arch supporting the stair. Also noteworthy are the fine woodwork and the Adamesque composition ornaments on the mantels. Brownsville remained in the hands of Upshur’s descendants until 1978 when it was acquired and restored by the Nature Conservancy as an operations center for its Eastern Shore barrier islands conservation program.