When was the actor born who played the founder and leader of the Order of the Phoenix in the last six films of the series?
Michael Gambon: Sir Michael John Gambon {'1': ", '2': ", '3': ", '4': "} (born 19 October 1940) is an Irish-born English actor who has worked in theatre, television and film. Michael Gambon:  Gambon has played the eponymous mystery writer protagonist in the BBC television serial "The Singing Detective", Jules Maigret in the 1990s ITV serial "Maigret", and Professor Albus Dumbledore in the final six "Harry Potter" films after the death of previous actor Richard Harris. Albus Dumbledore:  For most of the series, he is the headmaster of the wizarding school Hogwarts.
19 October 1940