The King has offered condolences to the step-sister of Anne Frank and Holocaust survivor Eva Schloss, who has died at the age of 96.
"We both are deeply saddened to hear of the death of Eva Schloss," wrote King Charles in a message shared via social media.
He continued, "The horrors that she endured as a teenager are difficult to fathom and yet she dedicated the rest of her life to fighting hatred and prejudice, promoting kindness, courage, understanding and resilience."
Mrs Schloss was the co-founder and honorary president of the Anne Frank Trust, an organization where Queen Camilla serves as Patron.
In the Second World War era, Mrs Schloss and her family were chased from their home in Austria. They existed as displaced persons in the Netherlands before being captured and sent to the notorious Auschwitz death camp.
The Anne Frank Trust said Mrs Schloss passed away in London on 3 January. "In her youth, Eva Schloss-Geiringer lived in Amsterdam, near Anne Frank's home," the trust stated.
By the time Mrs Schloss and her mother were freed by the Red Army in January 1945, they were barely alive. Her brother and father both died in captivity.
After being repatriated to Amsterdam, her mother Elfriede—called Fritzi—married Otto Frank, the father of Anne Frank, who had also managed to survive imprisonment by the Nazis.
Over the past 40 years, Mrs Schloss dedicated her life to trying to stop history from happening again.
"I worked very, very hard to alter people's attitudes," Mrs Schloss once said. "Each person you persuade not to be racist is a positive."
In 1951, Mrs Schloss relocated to London to learn photography. There she met her husband, Zvi Schloss, a German Jew who had escaped to Palestine during the war.
The couple made London their home and became British citizens. Mr Schloss died in London in 2016. They are remembered by their daughters, sons-in-law and grandchildren.
A gaming industry analyst with over a decade of experience in slot technology and market trends, based in Berlin.