By Graeme Murray & Gary Carter Hero supermarket staff saved a baby’s life after he swallowed his tongue while shopping with his family. Lucy Barkham, was in Asda ’s branch in Worsbrough, South Yorkshire, with Calum her partner and children Ruby, Reuben and Ronnie when she spotted that her youngest was ‘shaking’ in his pushchair. It emerged one-year-old Ronnie had suffered from a febrile convulsion – a seizure caused by a high fever and had swallowed his tongue.. Staff at the store Jackie Walker and Chris Nelson rushed to the family’s help as panicked parents and shoppers looked on in horror. L…