The Tervingi crossed the Danube into Roman territory after a clash with the Huns in 376. Some time later in Marcianopolis, the escort to their leader Fritigern was killed while meeting with Lupicinus. The Tervingi rebelled, and the Visigoths, a group derived either from the Tervingi or from a fusion of mainly Gothic groups, eventually invaded Italy and sacked Rome in 410, before settling in Gaul, and then, 50 years later, in Iberia, founding the Visigothic Kingdom that lasted for 250 years.