BBC News Published image captionFloral tributes have been left at Hillsborough Castle People from across Northern Ireland have been sharing their memories of Prince Philip, Queen Elizabeth II's husband, following his death. One of his major achievements was the establishment of the Duke of Edinburgh Award in 1956, an initiative many people from Northern Ireland have participated in. "I think one of my memories of him, one of his last presentations, was to a young person who - I think at that stage the Duke was either 95 or 96 - and the young person described him as cool," said Kate Thompson, the director of the Duke of Edinburgh Award in Northern Ireland.