Claudius married four times. His first marriage, to Plautia Urgulanilla, occurred after two failed betrothals. During their marriage she gave birth to a son, Claudius Drusus. Unfortunately, Drusus died of asphyxiation in his early teens, shortly after becoming engaged to Junilla, the daughter of Sejanus. Claudius later divorced Urgulanilla for adultery and on suspicion of murdering her sister-in-law Apronia. When Urgulanilla gave birth after the divorce, Claudius repudiated the baby girl, Claudia, as the father was one of his own freedmen.