Complex sentence: During the French Revolution, the monastery was purchased by the Boch family, who had the building demolished and built Liutwinus Cathedral in Mettlach, where the relics of the saint are located today.
Split into simpler sentences: During the French Revolution, the monastery was purchased by the Boch family. He had the building demolished and built Liutwinus Cathedral in Mettlach, where the relics of the saint are located today.