King Charles III and Prince William, Prince of Wales before the Committal Service for Queen Elizabeth II at St George's Chapel, Windsor Castle.
King Charles III and Prince William.Justin Setterfield/Getty Images
  • The British throne was taken over by King Charles III.

  • He is the oldest person to be a monarch in the UK at 73 years old.

  • Charles is a "caretaker" of the throne for the future, according to a royal historian.

According to a royal expert, King Charles III will carry out his duty to ensure the throne is there for future generations even though his reign will last less than Queen Elizabeth II's.

Charles is the oldest person to be king of Britain. When Queen Elizabeth II ascended to the throne in 1952, she made him her heir apparent.

The new king is aware of how little time he has left, according to a royal historian.

Charles knows that his time is shorter than his mother's. He is going to do the best that he can.

She said that he is a "caretaker for the next generation", referring to his sons, Prince William and Prince George. Both William and George are in line to the throne.

In his first speech as king, Charles pledged to uphold constitutional principles "throughout the remaining time God grants me." Doing his best in the years he has left is something Charles indicated he's acutely aware of in his first speech as king.

Prince William, Prince of Wales and King Charles III walk behind Queen Elizabeth II's coffin as it is transported on a gun carriage to Westminster Hall.
Prince William and King Charles III walk behind the coffin of Queen Elizabeth II.Max Mumby/Indigo/Getty Images

All monarchs act as placeholders for their heirs according to Dr. Bob Morris.

He said that someone would replace them. There's no more certainty than that.

Morris said that the time Charles has left could be useful to William and his wife. Preparing them for taking over would be helpful.

If Charles has less than 20 years left, William has the chance to become king. She said that Charles's reign gives William time to be a family man and not have to worry about being the head of the monarchy.

William is going to be king one day. She believes he will have a long reign in comparison to Charles.

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