Simplify the following text for a Grade 9 native English-speaking person.
Original: He was the second child of the Protestant headmaster of the secondary school at Aalen , Professor Erwin Rommel Senior ( 1860 â `` 1913 ) , and Helene von Luz , who had two other sons and a daughter .
Simplified: He was the second of four children of a Protestant headmaster of the secondary school at Aalen , Prof. Erwin Rommel the elder ( 1860 â `` 1913 ) , and Helene von Luz , a daughter of a prominent local dignitary .