During his speech at the state banquet on Tuesday in the UK, King Charles revealed to President Cyril Ramaphosa and all in attendance the affectionate nickname Nelson Mandela had for Queen Elizabeth.
"Avuxeni, Dumela, Sawubona, Molo, Molweni, Ndaa," Charles began his speech at the banquet on Wednesday, closing day one of the state visit. "My wife and I are delighted to welcome you [Ramaphosa] to Buckingham Palace this evening."
He added: "South Africa, like the Commonwealth, has always been a part of my life," before reflecting on the queen's 1947 speech.
He then revealed Mandela's Sotho nickname for the queen - Motlalepula - a woman's name, meaning "the one who comes with/brings rain".
Click 'read more' to see more of Ramaphosa's trip.