Early life and education. Arthur Christopher Orme Plummer was born on December 13, 1929, in Toronto, Ontario. He was the only child of John Orme Plummer, who sold stocks and other securities, and Isabella Mary Abbott, who worked as secretary to the Dean of Sciences at McGill University, and was the granddaughter of Canadian Prime Minister Sir John Abbott.
Gavin Christopher Newsom (born October 10, 1967) is an American politician and businessman who has served as the 40th governor of California since 2019. A member of the Democratic Party , he served as the 49th lieutenant governor of California from 2011 to 2019 and as the 42nd mayor of San Francisco from 2004 to 2011.