Pirates, in Fallston?

(J. Alexis Shriver, Bel Air Times) Who wants to join me in the fascinating (even though it be futile) building up of a playing card house, about an old tradition concerning a pirate?
Every indication points to the contrary, and yet there must be some reason to explain the constant search for hidden treasure which has continued for a hundred years.
Let us take our playing cards and build our fragile house of romance at "Bon Air", the gem of a French mansion built in 1794 by Claudius Francis Frederick de La Porte near the Gunpowder Falls in Harford County, almost adjoining the old Quaker Meeting House at Fallston. Continued

Photo: Historic American Buildings Survey E. H. Pickering, Photographer October 1936 BUILT 1794 BY CAPTAIN DE LA PORTE OF ROCHAMBEAU ARMY - Bon Air, Laurel Brook Road, Fallston, Harford County, MD