Ladislaus I of Hungary was a monarch of the Árpád dynasty who ruled Hungary from 1077 and later became King of Croatia in 1091. Born in Poland around 1040 to King Béla I and Richeza, he initially served as a duke alongside his brother, Géza. After a period of civil conflict against their cousin Solomon, Ladislaus rose to power following his brother's death. He is remembered for securing the kingdom's borders against nomadic incursions and for his strict legal reforms aimed at protecting property rights.