▁hands . ▁ ▁When ▁Philip se ▁died ▁in ▁ 1 7 0 2 , ▁the ▁man or ▁was ▁divided ▁between ▁his ▁son , ▁Ad olph us ▁Philip se , ▁and ▁his ▁grand son , ▁Frederick ▁Philip se ▁II . ▁Ad olph ▁received ▁the ▁Upper ▁M ills ▁property , ▁which ▁extended ▁from ▁Dob bs ▁Fer ry ▁to ▁the ▁Cro ton ▁River . ▁Frederick ▁II ▁was ▁given ▁the ▁Lower ▁M ills ▁at ▁the ▁confl u ence ▁of ▁the ▁S aw ▁Mill ▁and ▁Hudson ▁R ivers , ▁the ▁two ▁parc els ▁being ▁reun ited ▁on ▁his ▁uncle ' s ▁death . ▁His ▁son , ▁Frederick ▁III , ▁became ▁the ▁third ▁lord ▁of ▁the ▁man or ▁in ▁ 1 7 5 1 . ▁ ▁In ▁ 1 7 7 9 , ▁Frederick ▁Philip se ▁III , ▁a ▁Lo yal ist , ▁was ▁att ained ▁for ▁tre ason , ▁The ▁man or ▁was ▁conf isc ated ▁and ▁sold ▁at ▁public ▁au ction , ▁split ▁between ▁ 2 8 7 ▁buy ers . ▁The ▁largest ▁tract ▁of ▁land ▁( about ▁) ▁was ▁at ▁the ▁Upper ▁M ills ; ▁it ▁passed ▁to ▁numerous ▁own ers ▁until ▁ 1 9 5 1 , ▁when ▁it ▁was ▁acquired ▁by ▁S leep y ▁H ollow ▁Rest or ations . ▁Thanks ▁to ▁the ▁phil anth ropy ▁of ▁John ▁D . ▁Rock ef eller ▁Jr ., ▁about ▁ ▁were ▁restored ▁as ▁today ' s ▁historic ▁site . ▁ ▁Geography ▁S leep y ▁H ollow ▁is ▁located ▁at ▁ ▁( 4 1 . 0 9 1