Complex sentence: During Conan's 1066 campaign against Anjou, he took Pouancé and Segré, and arrived in Château-Gontier, where he was found dead after donning poisoned riding gloves.
Split into simpler sentences: During Conan's 1066 campaign against Anjou, he took Pouancé and Segré, and arrived in Château-Gontier. There he was found dead after donning poisoned riding gloves.