The final count of Chiny, Arnold IV de Rumingy, sold the county to the duke of Luxembourg, ending a dynasty of five hundred years.
The division of the Lotharingian territories was agreed to on 8 Aug 870 between Louis the German and his half-brother Charles the Bald.
Ivois is first referred to by name in a charter dated 21 Nov 955 which records an agreement between Eremboldus miles [knight] and Robert, the Archbishop of Trier, relating to property including Aduna in comitatu Ivotio [the county of Ivois] inter Boura et Lannilley.
They met again in May 1056, and the matter of Lorraine was so contentious that the king challenged the emperor to single combat.
Arnoul was granted the title Count of Chiny by Archbishop Bruno the Great after a high church was built.