The World's Youngest mother. by Betty2010/11/24 08:14 It was the tale of the century in may 1939, when lina medina made medical history as the world's youngest mother, till date, she still remain the youngest known mother in the world. Lina medina's parents thought their 5-year-old daughter had a huge abdominal tumour and when 'shaman' (local priest) in the remote village in peru's andes could find no cure, her father carried her to a hospital.