Simplify the following text for a Grade 8 native English-speaking person.
Original: In 1444 his mother Marie died , and was buried in the cathedral ; and in 1445 Dufay moved into the house of the previous canon , which was to remain his primary residence for the rest of his life .
Simplified: In 1444 his mother died , and was buried in the cathedral ; and in 1445 Dufay moved into the house of the person who had been canon just before .