Dr Carolyn Harris, who advises Guinness World Records on regal matters, is a historian, author, royal commentator and instructor in history at the University of Toronto School of Continuing Studies in Canada. She is an expert in the history of European monarchy, and her writing concerning the historical context for issues facing the British (and Canadian) monarchy today has appeared in numerous publications. Dr Harris is the author of Raising Royalty: 1,000 Years of Royal Parenting (2017) and Queenship and Revolution in Early Modern Europe: Henrietta Maria and Marie Antoinette (2015). She is also a prolific guest lecturer, both on land and at sea.Visit Dr Carolyn Harris
Longest-reigning monarch (living)
The longest-reigning living monarch is Her Majesty Queen Elizabeth II (UK, b. 21 Apr 1926), who succeeded to the throne on 6 Feb 1952 on the death of her father, King George VI. As of 11 Dec 2020, Queen Elizabeth II had reigned without interruption for 68 years 309 days.