Simplify the following text for a Grade 9 native English-speaking person.
Original: Linda Louise McCartney , Lady McCartney ( nÃ e Eastman , formerly See ; September 24 , 1941 â `` April 17 , 1998 ) was an American photographer , musician and animal rights activist .
Simplified: Lady Linda Louise Eastman See McCartney ( September 24 , 1941-April 17 , 1998 ) was the first wife of musician Paul McCartney .