The Obama's have written a lovely tribute
I imagine most tributes had already been written.
"When we first met His Royal Highness Prince Philip, Duke of Edinburgh, he and Her Majesty Queen Elizabeth II had already been on the world stage for more than half a century — welcoming leaders like Churchill and Kennedy; Mandela and Gorbachev," Obama said. "As two Americans unaccustomed to palaces and pomp, we didn't know what to expect."
"We shouldn't have worried," he added. "The Queen and Prince Philip immediately put us at ease with their grace and generosity, turning a ceremonial occasion into something far more natural, even comfortable. Prince Philip in particular was kind and warm, with a sharp wit and unfailing good humor. It was our first introduction to the man behind the title, and in the years since, our admiration for him has only grown. We will miss him dearly."
people.com/politics/barack-obama-pays-tribute-prince-philip/