Kate Middleton on Sunday shared two moving photographs she took of Holocaust survivors and their grandchildren, in remembrance of the 75th anniversary of the Holocaust.

One portrait features Steven Frank alongside his granddaughters, Maggie and Trixie, according to Kensington Palaces Instagram account . The second portrait is of Yvonne Bernstein and her granddaughter, Chloe.

The Duchess of Cambridge said in the post that it was a true honour to photograph her subjects. Frank, who survived two camps, and Bernstein, who was hidden while a child in France, both moved to Britain in the 1940s. Both survivors brought personal items with them to be included in the pictures.

The harrowing atrocities of the Holocaust, which were caused by the most unthinkable evil, will forever lay heavy in our hearts, Kate said in another Instagram post that showed her behind-the-scenes work with Frank and Bernstein.

Yet it is so often through the most unimaginable adversity that the most remarkable people flourish. Despite unbelievable trauma at the start of their lives, Yvonne Bernstein and Steven Frank are two of the most life-affirming people that I have had the privilege to meet, the duchess added.

They look back on their experiences with sadness but also with gratitude that they were some of the lucky few to make it through. Their stories will stay with me forever.