I received this information about 12 years ago. I found one mistake for a county year when it was formed. Please, if any of you find any other mistakes that could be my typo or a mistake on my copy that I transferred to you, let me know. Hope this is helpful to you. Sharon County Formed Parent County County Seat Adams 1800 York Gettysburg Allegheny 1788 Washington & Westmoreland Pittsburgh Armstrong 1800 Allegheny, Lycoming & Westmoreland Kittanning Beaver 1800 Allegheny & Washington Beaver Bedford 1771 Cumberland Bedford Berks 1752 Chester, Lancaster, & Philadelphia Reading Blair 1846 Bedford & Huntingdon Hollidaysburg Bradford 1816 Luzerne & Lycoming Towanda Bucks 1862 ORIGINAL COUNTY Doylestown Butler 1800 Allegheny Butler Cambria 1804 Huntingdon & Somerset Ebensburg Cameron 1860 Clinton, Elk, McKean & Potter Emporium Carbon 1843 Monroe & Northampton Jim Thorpe Centre 1800 Huntington, Lycoming, Mifflin & Northumberland Bellefonte Chester 1682 ORIGINAL COUNTY West Chester Clarion 1839 Armstrong & Venango Clarion Clearfield 1804 Huntingdon & Lycoming Clearfield Clinton 1839 Centre & Lycoming Lock Haven Columbia 1813 Northumberland Bloomsburg Crawford 1800 Allegheny Meadville Cumberland 1750 Lancaster Carlisle Dauphin 1785 Lancaster Harrisburg Delaware 1789 Chester Media Elk 1843 Clearfield, Jefferson & McKean Ridgeway Erie 1800 Allegheny Erie Fayette 1783 Westmoreland Uniontown Forest 1848 Jefferson & Venango Tionesta Franklin 1784 Cumberland Chambersburg Fulton 1851 Bedford McConnellsburg Greene 1796 Washington Waynesburg Huntingdon 1787 Bedford Huntingdon Indiana 1803 Lycoming & Westmoreland Indiana Jefferson 1804 Lycoming Brookville Juniata 1831 Mifflin Mifflintown Lackawanna 1878 Luzerne Scranton Lancaster 1729 Chester Lancaster Lawrence 1849 Beaver & Mercer New Castle Lebanon 1813 Dauphin & Lancaster Lebanon Lehigh 1812 Northampton Allentown Luzerne 1786 Northumberland Wilkes-Barre Lycoming 1795 Northumberland Williamsport McKean 1804 Lycoming Smethport Mercer 1800 Allegheny Mercer Mifflin 1789 Cumberland & Northumberland Lewistown Monroe 1836 Northampton & Pike Stroudsburg Montgomery 1784 Philadelphia Norristown Montour 1850 Columbia Danville Northampton 1752 Bucks Easton Northumbland 1772 Bedford, Berks, Cumberland, Lancaster & Northhampton Sunbury Perry 1820 Cumberland New Bloomfield Philadelphia 1682 ORIGNIAL COUNTY Philadelphia Pike 1814 Wayne Milford Potter 1804 Lycoming Coudersport Schuylkill 1811 Berks & Northampton Pottsville Snyder 1855 Union Middleburg Somerset 1795 Bedford Somerset Sullivan 1847 Lycoming Laporte Susquehanna 1810 Luzerne Montrose Tioga 1804 Lycoming Wellsboro Union 1813 Northumberland Lewisburg Venango 1800 Allegheny & Lycoming Franklin Warren 1800 Allegheny & Lycoming Warren Washington 1781 Westmoreland Washington Wayne 1798 Northhampton Honesdale Westmoreland 1773 Bedford Greensburg Wyoming 1842 Luzerne Tunkhannock York 1749 Lancaster York