Simplify the following text for a Grade 7 native English-speaking person.
Original: Tarrasch was Jewish , converted to Christianity in 1909 , and a patriotic German who lost a son in World War I. Yet he faced antisemitism in the early stages of Nazism .
Simplified: Tarrasch was born Jewish , and converted to Christianity in 1909 . He was a patriotic German , who lost a son in World War I , but he faced antisemitism in the early stages of Nazism .