By Joel Leaver Gregg Wallace paid tribute to his wife Anne-Marie Sterpini for Mother’s Day, having shared a post about parents of autistic children to mark the special occasion this week. The MasterChef judge, 59, and his wife, 37 – who’s known as Anna – are parents to four-year-old son Sid together. Gregg announced two years ago that the couple’s son had been diagnosed with autism and global development delay. He’s spoken about their experiences since then, including having previously discussed the challenges of Sid being non-verbal. Gregg issued an update this week though, in which he said t…