Smithburg is an unincorporated community located where the municipal boundaries of Freehold, Manalapan and Millstone townships intersect in Monmouth County, in the U.S. state of New Jersey.

By the mid 18th century, one of the stagecoach stops listed on the route was the Smithburg Tavern, suggesting that the community had already been rather established by this point.

Parker died on January 2, 1888, in Philadelphia[5] and was buried in nearby Maplewood Cemetery, within the center of Freehold Township, New Jersey.

His burial place also happens to be located right along the historic "Burlington Path" on what is now West Main Street (County Route 537), adjacent to the Freehold Raceway Mall.

Some farmers claim Hessians, mercenary German soldiers for the British during the Revolutionary War, either deserted their fighting at the Monmouth Battlefield or lost their way.