<Tr> <Th> Years active </Th> <Td> 1963--1967 </Td> </Tr> <Tr> <Th> Known for </Th> <Td> Michael Banks in Mary Poppins (1964) </Td> </Tr> <P> Matthew Adam Garber (25 March 1956--13 June 1977) was a British child actor, best known for his role as Michael Banks in the 1964 film Mary Poppins . He also starred in two other Disney films, The Three Lives of Thomasina and The Gnome - Mobile, all three times appearing alongside actress Karen Dotrice . </P> <P> Ten years after his retirement, Garber contracted hepatitis, which later affected his pancreas . He died of pancreatitis at the age of 21 . </P>

Who played the little boy in mary poppins