Simplify the following text for a Grade 7 native English-speaking person.
Original: His Royal Highness The Prince Edward was given the title `` Earl of Wessex '' when he married Sophie who became the Countess of Wessex .
Simplified: In an unusual move , Prince Edward was made Earl of Wessex and Viscount Severn in honor of his marriage to Sophie Rhys-Jones . The title Earl of Wessex had not been in use for over 900 years .