Prince Seeiso Bereng Seeiso of Lesotho, Principal Chief of Matsieng (born 16 April 1966) is the younger brother of Lesotho's King Letsie III, and son of the Southern African country's late King Moshoeshoe II (1938–1996) and the late Queen 'Mamohato Bereng Seeiso (1941–2003).

[4] He is also a Chevening Scholar, and obtained a master's degree in International Studies from the University of Birmingham in 1996.

[5] In April 2006, he and Prince Harry formed a charity called Sentebale which means "forget-me-not" to support organizations working with Lesotho's disadvantaged young people and children, particularly those orphaned as a result of HIV and AIDS.

[6] He was awarded an honorary degree by University of Birmingham in 2007.

[8] He and his wife attended the wedding of Prince Harry and Meghan Markle, the only foreign royals to do so.