Simplify the following text for a Grade 5 native English-speaking person.
Original: Hopetoun and his family left Australia ( from Brisbane ) on 17 July 1902 , though he formally remained in the position of Governor-General until 9 January 1903 .
Simplified: Hopetoun resigned in May 1902 . He and his family left Australia ( from Brisbane ) on 17 July 1902 .