In 486, with the help of Ragnachar, Clovis defeated Syagrius, the last Roman official in northern Gaul, who ruled the area around Soissons in present-day Picardie.[4] This victory at Soissons extended Frankish rule to most of the area north of the Loire. After this, Clovis secured an alliance with the Ostrogoths through the marriage of his sister Audofleda to their king, Theodoric the Great. He followed this victory with another in 491 over a small group of Thuringians east of the Frankish territories. Later, with the help of the other Frankish sub-kings, he narrowly defeated the Alamanni in the Battle of Tolbiac.