Pittsburgh, city, seat (1788) of Allegheny county, southwestern Pennsylvania, U.S. The city is located at the confluence of the Allegheny and Monongahela rivers, which unite at the point of the “Golden Triangle” (the business district) to form the Ohio River. A city of hills, parks, and valleys, it
Daniel Boone (1734–1820), legendary American frontiersman Daniel Boone was born to a family of English Quakers in Oley (now Exeter) township, near Readi.