In 1795, Walter Dulany Addison (who owned Oxon Hill) and John Addison (who owned Gisbrough) deeded  of their land to their brother, Thomas Grafton Addison.
In the year 1795, Walter Dulany Addison, who possessed Oxon Hill, and John Addison, who owned Gisbough, gave a portion of their land to their brother, Thomas Grafton Addison.