Back in November, William actually welcomed 20 Diana Award honorees at Kensington Palace. At the event, William proved his dedication to his mothers' legacy by getting to know all the honorees beforehand, even going as far as to speak Swahili to one of the attendees.
"He had time with all 20 and had read up in their stories," Tessy Ojo, chief executive of the Diana Award charity, told People. "One of the young people is from Tanzania, and he started talking to him in Swahili — and this young boy was gobsmacked! It wasn't just one sentence. This was not something he had just read out of a book. It was truly special. And the other thing he said to the group was 'my mother would be so proud of you.'"
The Diana Award charity posted William's letter alongside photos of him and Harry working with the charity at past events. The organization thanked all the royals involved and reiterated its gratitude to have the support of both Harry and William.
"We've received a lovely message from HRH the Duke of Cambridge. Thank you to the Duke and the Duke of Sussex for all your support over the years and now in this uncertain time," the charity captioned its Instagram post. "We're incredibly grateful for all of our supporters (including you reading this right now) for making it possible for us to help young people change the world. We hope this brightens your day - it certainly did ours!"
This article originally appeared on InStyle US.