Simplify the following text for a Grade 10 native English-speaking person.
Original: Heathcliff Andrew Ledger ( April 4 , 1979 â `` January 22 , 2008 ) was an Academy Award-winning Australian actor .
Simplified: Heath Andrew Ledger ( 4 April 1979 â `` 22 January 2008 ) was an Australian television and film actor .