After making a significant impact in London during the 1970s, Michael Gambon, the accomplished Irish-born actor known for his remarkable stage and screen performances, including iconic roles such as Edward VII, Oscar Wilde, and Winston Churchill, passed away on Wednesday night at the age of 82. Gambon gained widespread recognition as Albus Dumbledore, the firm yet benevolent headmaster of Hogwarts School of Witchcraft and Wizardry, in the "Harry Potter" film series.