The Counts of Champagne ruled the region of Champagne from 950 to 1316. Champagne evolved from the county of Troyes in the late eleventh century and Hugh I was the first to officially use the title "Count of Champagne". When Louis became King of France in 1314, upon the death of his father Philip IV, Champagne became part of the Crown's territories. The titular counts of Champagne also inherited the post of seneschal of France.
Evergates, Theodore. Feudal Society in the Baillage of Troyes under the Counts of Champagne, 1152-1284. ISBN 0-8018-1663-7
Evergates, Theodore. Feudal Society in Medieval France: Documents from the County of Champagne. ISBN 0-8122-1441-2 (paperback), ISBN 0-8122-3225-9 (hardback)
Evergates, Theodore. "The Aristocracy of Champagne in the Mid-Thirteenth Century: A Quantitative Description." Journal of Interdisciplinary History, Vol. 5. pp 1-18 (1974).