My name is Kirk Ellis. I am nine years old. This is my story.So begins the Rocking Horse Diary, penned by Kirk who wants to tell the story of his grandad, Sidney Mudge, who is "a very special man and possibly the world's best grandad." Although Kirk and his grandad are fictional characters, Alzheimer's is not, and Alan Combes' story is based on real events.There is a strong vein of comedy in the story. As Alan says, 'Without humour, coping with dementia...