▁York ▁col ony . ▁ ▁William ▁P enn ▁was ▁granted ▁" P en nsylvan ia ", ▁which ▁grant ▁specifically ▁ex cluded ▁New ▁Castle ▁or ▁any ▁of ▁the ▁lands ▁within ▁ ▁of ▁it . ▁Nevertheless , ▁P enn ▁wanted ▁an ▁out let ▁to ▁the ▁sea ▁from ▁his ▁new ▁province . ▁He ▁persu aded ▁James ▁to ▁le ase ▁him ▁the ▁western ▁shore ▁of ▁Del aware ▁Bay . ▁So , ▁in ▁ 1 6 8 2 , ▁P enn ▁arrived ▁in ▁New ▁Castle ▁with ▁two ▁documents : ▁a ▁char ter ▁for ▁the ▁Province ▁of ▁Pennsylvania ▁and ▁a ▁le ase ▁for ▁what ▁became ▁known ▁as ▁" the ▁Lower ▁Count ies ▁on ▁the ▁Del aware ". ▁ ▁P enn ▁had ▁inherited ▁James ' ▁claims ▁and ▁thus ▁began ▁nearly ▁ 1 0 0 ▁years ▁of ▁lit ig ation ▁between ▁P enn ▁and ▁Baltimore , ▁and ▁their ▁he irs , ▁in ▁the ▁High ▁Court ▁of ▁Ch anc ery ▁in ▁London . ▁The ▁settlement ▁of ▁the ▁legal ▁batt les ▁was ▁started ▁by ▁the ▁he irs ' ▁agree ing ▁to ▁the ▁survey ▁performed ▁by ▁Charles ▁Mason ▁and ▁Jer em iah ▁D ixon ▁between ▁ 1 7 6 3 ▁and ▁ 1 7 6 7 . ▁Their ▁work ▁resulted ▁in ▁the ▁famous ▁Mason – D ixon ▁line . ▁The ▁final ▁adj ud ic ation ▁of ▁the ▁settlement ▁was ▁not ▁completed ▁until ▁the ▁e ve ▁of ▁the ▁American ▁Revolution . ▁The ▁settlement ▁was ▁a ▁major ▁reason ▁for ▁the ▁close ▁political ▁al liance ▁between ▁the ▁property ▁own ers ▁of ▁the ▁Lower ▁Count ies ▁and ▁the