Simplify the following text for a Grade 6 native English-speaking person.
Original: In June 1957 , aged 19 , he married 16-year-old Maryann Burk , who had just graduated from a private Episcopal school for girls .
Simplified: In June 1957 , aged 19 , he married 16-year-old Maryann Burk . She had just graduated from a private Episcopal school for girls .