<P> In 1779 , Frederick Philipse III , a Loyalist , was attainted for treason along with his family . The manor was confiscated and sold at public auction , and the land was split between 287 buyers . The largest tract of land ( about 750 acres ( 300 ha ) ) , the Upper Mills , was passed to numerous owners until 1951 , when it was acquired by Sleepy Hollow Restorations ( now Historic Hudson Valley ) . Thanks to the philanthropy of John D. Rockefeller Jr. , about 20 acres ( 8.1 ha ) were restored as an historic site known as Philipsburg Manor . The Lower Mills manor house , Philipse Manor Hall , served as Yonkers City Hall from 1872 until 1908 . Both houses became National Historic Landmarks on November 5 , 1961 and are now house museums . </P>
<P> In 1779 , Frederick Philipse III , a Loyalist , was attainted for treason along with his family . The manor was confiscated and sold at public auction , and the land was split between 287 buyers . The largest tract of land ( about 750 acres ( 300 ha ) ) , the Upper Mills , was passed to numerous owners until 1951 , when it was acquired by Sleepy Hollow Restorations ( now Historic Hudson Valley ) . Thanks to the philanthropy of John D. Rockefeller Jr. , about 20 acres ( 8.1 ha ) were restored as an historic site known as Philipsburg Manor . The Lower Mills manor house , Philipse Manor Hall , served as Yonkers City Hall from 1872 until 1908 . Both houses became National Historic Landmarks on November 5 , 1961 and are now house museums . </P>
who owned the philipsburg manor before the break up
who owned the philipsburg manor before the break up
Frederick Philipse III
Frederick Philipse III