Complex sentence: Although his formal education was ended by his father at age 13, when he apprenticed the youth to a Lancaster, Pennsylvania merchant; as a young adult Gowen studied law under a local attorney in Pottsville, Pennsylvania.
Split into simpler sentences: Although his formal education was ended by his father at age 13, when he apprenticed the youth to a Lancaster, Pennsylvania merchant. As a young adult Gowen studied law with a local attorney in Pottsville, Pennsylvania.