Complex sentence: Raimbaut of Orange (c.1147--1173), or in Occitan Raimbaut d'Aurenga, was the lord of Orange and Omelas and a major troubadour, having contributed to the creation of "trobar clus", or cryptic style, in troubadour poetry.
Split into simpler sentences: Raimbaut of Orange (c.1147--1173), or in Occitan Raimbaut d'Aurenga, was the lord of Orange and Omelas. He was a major troubadour, having contributed to the creation of "trobar clus", or cryptic style, in troubadour poetry.