 The name Lajjun derives from the Roman name Legio , referring to the Roman legion stationed there . In the 3rd century , the town was renamed Maximianopolis ( " City of Maximian " ) by Diocletian in honor of Maximian , his co @-@ emperor , but the inhabitants continued to use the old name . Under the Caliphate , the name was Arabicized into al @-@ Lajjûn or el @-@ Lejjûn , which was used until the Crusaders conquered Palestine in 1099 . The Crusaders restored the Roman name " Legio " , and introduced new names such as Ligum and le Lyon , but after the town was reconquered by the Muslims in 1187 , " al @-@ Lajjun " once again became its name . 
