Robert Corrigan's birthplace is considered one of six historic cities in what area?
County Tyrone County Tyrone (from Irish: "Tír Eoghain" , meaning "land of Eoghan" ) is one of the six historic counties of Northern Ireland. It is also one of the 32 traditional counties of Ireland and lies within the historic province of Ulster. It is no longer used as an administrative division for local government but retains a strong identity in popular culture.
Philadelphia Philadelphia ( ) is the largest city in the Commonwealth of Pennsylvania and the sixth-most populous city in the United States, with an estimated population of 1,567,872 and more than 6 million in the seventh-largest metropolitan statistical area, as of 2016 . Philadelphia is the economic and cultural anchor of the Delaware Valleya region located in the Northeastern United States at the confluence of the Delaware and Schuylkill Rivers with 7.2 million people residing in the eighth-largest combined statistical area in the United States.