Following the passing of Queen Elizabeth II on Thursday, eldest son King Charles III became her successor. He will be proclaimed monarch at an Accession Council in St James's Palace on Saturday.
King Charles III was born on November 14, 1948, making him 73 years old - the oldest person to ever ascend the British throne. The septuagenarian joins a list of oldest living monarchs in the world, all of whom are over 73 years of age.
The oldest reigning monarch is King Salman bin Abdulaziz Al Saud, who is currently 86 years old. Ruling since 2015, he is the sixth of King Abdulaziz’s twenty-five sons to rule over the Kingdom of Saudi Arabia.