Luitgarde of Vermandois was born about 914 to Herbert II of Vermandois and Adele, daughter of Robert I of France. She was countess of Vermandois and later became duchess consort of Normandy. Her first husband, William I of Normandy (William Longsword) died without them having any children, it was a short-lived event lasting only from 940 to 942. She later married Theobald I of Blois in 943 and had four children with him, Theobald, Hugh, Odo and Emma. She died February 9, 978.