 To avenge Berthold's defeat, Pope Innocent III issued a bull declaring a crusade against the Livonians.Albrecht von Buxthoeven, consecrated as bishop in 1199, arrived the following year with a large force, and established Riga as the seat of his Bishopric of Riga in 1201.In 1202 he formed the Livonian Brothers of the Sword to aid in the conversion of the pagans to Christianity and, more importantly, to protect German trade and secure German control over commerce.