Allen was born into a prominent Philadelphia family. His father, William Allen, was a successful merchant and lawyer, and would later be the Chief Justice of the Supreme Court of Pennsylvania. Andrew graduated from the City College of Philadelphia (later the University of Pennsylvania) in 1759, read law under Benjamin Chew, and then went to London to complete a legal education at the Inner Temple. He returned to Philadelphia in 1765, was admitted to the bar, and began to practice law.
¡Cuatro años de duro trabajo!Este mes de mayo cumplimos cuatro años al aire. Seguimos trabajando en la difusión de este maravilloso instrumento, ¡gracias por participar en nuestra historia!