Penelope Knatchbull, Countess Mountbatten of Burma, 67, wore a black hat and dress to Philip's funeral
Penny was a regular visitor at Wood Farm, Philip's cottage on the edge of the Sandringham Estate in Norfolk
She is married to Prince Philip's godson Norton Knatchbull, the son of Philip's cousin Patricia Knatchbull and grandson of Lord Mountbatten, while Norton is the godfather of Prince William and stays close to the family
Despite their 32 years age difference, the pair were firm friends for decades and shared a love for the exhilarating equestrian sport of carriage-driving