Władysław II (the Exiled), High Duke of Poland, suffers a defeat against the coalition forces under his brother Bolesław IV (the Curly). Władysław and his family escape across the border to Bohemia and later seek refuge in Germany. Bolesław captures Silesia and the Senioral territories, and becomes the new ruler of Greater Poland.
The Republic of Genoa reaches a commercial agreement with Ramon Berenguer IV, count of Barcelona, granting privileges to merchants of both nations in the Catalan and Ligurian ports.[3]
Williams, John B. (1997). "The making of a crusade: the Genoese anti-Muslim attacks in Spain 1146-1148". Journal of Medieval History. 23 (1): 29–53. doi:10.1016/s0304-4181(96)00022-x.
Chester Jordan, William (1997). The great famine: northern Europe in the early fourteenth century. Princeton: Princeton University Press. ISBN0-691-05891-1.