Simplify the following text for a Grade 8 native English-speaking person.
Original: When he was 35 , Edison married Mina Miller , who was 19 . He had 3 children in that marriage : Madeleine Edison , Charles Edison ( who took over the company when his father died and was later elected Governor of New Jersey ) , and Theodore Miller Edison .
Simplified: In Beaumont , Texas , there is an Edison Museum , though Edison never visited there .