A sad coda to the story about a terminally ill 2-year-old boy who served as his parents' best man over the weekend: Logan Stevenson has died, reports NBC News. Mom Christina announced the news on her Facebook page. She and new husband Sean scrapped plans for a 2014 wedding and put together an impromptu backyard ceremony so Logan could take part. They did so after doctors had sent him home with just a few weeks to live. He had battled leukemia more than half his short life. "No more sickness," writes his mom. "No more hospitals."