William B. Paca and Jane Martha Phillips

Samuel Hughes' Mount Pleasant estate was sold at a sheriff's sale to Herman Stump in 1822.  Stump sold the Mount Pleasant mansion and surrounding farmlands to William B. Paca in 1834. 

Paca, grandson of Declaration of Independence signer Governor William Paca, used the mansion as a summer retreat until 1851.  William B. Paca is also related to Aquila Paca, a signer of the Bush Declaration, the first declaration of independence made by any representative body in America, signed in 1775.