Complex sentence: McKinly was elected Sheriff of New Castle County in 1757, served 4 three year terms as Chief Burgess of the town of Wilmington between 1758 and 1776, and represented New Castle County in the Assembly of the Lower Counties from the 1771/72 session through the 1775/76 session.
Split into simpler sentences: McKinly was elected Sheriff of New Castle County in 1757, served 4 three year terms as Chief Burgess of the town of Wilmington between 1758 and 1776. He also represented New Castle County in the Assembly of the Lower Counties from the 1771/72 session through the 1775/76 session.