[1] He was still under-age at the time of his father's death, and his mother acted as regent for him from 1170 to 1173.
In 1178, the Bishop of Toul began to construct a fortress at Liverdun, with the authorisation of the Duke of Upper Lorraine, Simon II.
This did not compromise his good relations with the Duke, although the latter could have felt threatened by the fortresses of Liverdun, Amance and Mousson.
On arriving in what remained of the Kingdom of Jerusalem, he took part in the siege of Acre.
He was joined there in summer 1190 by his uncles Theobald V of Blois and Stephen I of Sancerre, and his cousin Henry II of Champagne.