FILE - Britain's Princess Eugenie arrives for the wedding ceremony of Prince Harry and Meghan Markle at St. George's Chapel in Windsor Castle in Windsor, near London, England. Saturday, May 19, 2018. (Gareth Fuller/pool photo via AP, File)

LONDON (AP) — With Charles becoming Britain’s king, his sons and grandchildren are next in succession for the monarchy. Here are the first 15 people in order of succession:

1. Prince William, the elder son of Charles and the late Princess Diana. He is married to Kate, the Duchess of Cambridge. Their three children follow him in the line of succession.

2. Prince George of Cambridge, born in July 2013.

3. Princess Charlotte of Cambridge, born in May 2015.

4. Prince Louis of Cambridge, born in April 2018.

FILE - Britain's Princess Beatrice of York attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating the opening of the Heavenly Bodies: Fashion and the Catholic Imagination exhibition, in New York, Monday, May 7, 2018. (Photo by Evan Agostini/Invision/AP, File)

5. Prince Harry, the younger son of Charles and Diana.

6. Archie Mountbatten-Windsor, born to Harry and Meghan, Duchess of Sussex, in May 2019.

7. Lilibet Mountbatten-Windsor, born in June 2021.

8. Prince Andrew, Queen Elizabeth II and Prince Philip’s second-eldest son.

9. Princess Beatrice, elder daughter of Andrew and his former wife, Sarah Ferguson.

FILE - Britain's Prince Andrew, Duke of York attends the opening ceremony of the conference entitled Epitomernok 200 (Architect 200) at the Hungarian Academy of Sciences (MTA) headquarters in Budapest, Hungary, Monday, Sept. 10, 2018. (Tamas Kovacs/MTI via AP, file)

10. Sienna Elizabeth, daughter of Beatrice and Edoardo Mapelli Mozzi, born in September 2021.

11. Princess Eugenie, Andrew and Sarah’s younger daughter.

12. August Brooksbank, born to Eugenie and James Brooksbank in February 2021.

13. Prince Edward, the queen and Philip’s youngest child.

14. James, Viscount Severn, the younger child of Edward and his wife Sophie, Countess of Wessex.

FILE - Britain's Prince Harry arrives in the gardens of Buckingham Palace in London, Thursday, Jan. 16, 2020. (AP Photo/Kirsty Wigglesworth, File)

15. Lady Louise Mountbatten-Windsor, Edward and Sophie’s daughter.

FILE - Britain's Prince Louis arrives for a special pantomime performance at London's Palladium Theatre, Friday Dec. 11, 2020, hosted by The National Lottery, to thank key workers and their families for their efforts throughout the COVID-19 pandemic. (Aaron Chown/Pool via AP, File)

FILE - Britain's Princess Charlotte arrives to attend a Service of Thanksgiving for the life of Prince Philip, Duke of Edinburgh at Westminster Abbey in London, Tuesday, March 29, 2022. (AP Photo/Matt Dunham, File)

FILE - Britain's Prince George holds the hand of his father Prince William as they arrive to attend a Service of Thanksgiving for the life of Prince Philip, Duke of Edinburgh at Westminster Abbey in London, Tuesday, March 29, 2022. (AP Photo/Matt Dunham, File)

FILE - Britain's Prince William visits at the Heart of Midlothian Football Club, in Edinburgh, Scotland, Thursday May 12, 2022. (Jane Barlow/Pool Photo via AP, File)

FILE - Britain's Prince Charles and Camilla the Duchess of Cornwall, in the background, leave after attending the annual Commonwealth Day service at Westminster Abbey in London, Monday, March 9, 2020. (AP Photo/Kirsty Wigglesworth, File)

The British Royal family tree.