(enlarge photo) The Guinness world record for the Heaviest Birth Ever was set by Anna Bates (nee Née) (Swan) (canada–1846), 88 who gave birth to a boy weighing.10 8 (kg 23 lb 12) (oz length 76 (cm 30)) in at her home In, Seville, OHIO usa on 19 january, 1879 but the baby died 11 hours. later