Gordon Ramsay is outraged that anyone would think that he is his youngest son's grandad.The 54-year-old TV chef and wife Tana, 46, share their fifth child, Oscar, who turned one in April.The couple are also parents to Megan, 22, Holly and Jack who are both 20 and Matilda, 19. Get exclusive celebrity stories and fabulous photoshoots straight to your inbox with OK's daily newsletter.