Simplify the following text for a Grade 12 native English-speaking person.
Original: Naturalised German-born Jacques Mieses was awarded the GM title in 1950 ; and Jonathan Penrose was awarded the title retrospectively .
Simplified: The naturalised , German-born Jacques Mieses was awarded the GM title in 1950 , while Keith Richardson had been awarded the GM title for correspondence chess earlier in the 1970s .