Simplify the following text for a Grade 9 native English-speaking person.
Original: Gambon was invested by Prince Charles as a Knight Bachelor on 17 July 1998 for services to drama ( Queen Elizabeth II 's approval for the award was notified in the 1998 New Year Honours List ) and his wife thus became Lady Gambon .
Simplified: Gambon was invested by Prince Charles as a Knight Bachelor on 17 July 1998 for `` services to drama '' . ( Queen Elizabeth II 's approval for the award was notified in the 1998 New Year Honours List . )