Simplify the following text for a Grade 9 native English-speaking person.
Original: Keynes ' great-grandparents were Nobel Prize laureate Edgar Adrian , 1st Baron Adrian and Hester Adrian , Baroness Adrian .
Simplified: Keynes ' great-grandparents were Edgar Adroam . 1st Barpm Adoroam and Hester Adrian , Baroness Adrian , both receivers of the Nobel Prize .