In one account, he and Baldwin II, Count of Hainaut, were sent by Godfrey to secure the release of Hugh the Great who had been imprisoned by the Emperor Alexios.
It is reported that Godfrey was “somewhat disquieted” but it is not clear that his displeasure was with Hugh’s capture or with the haste of the departure of Baldwin and Henry.
Henry and Hartmann, Count of Dillingen-Kyburg (Heinricus de Ascha, Hartmannus comes, unus de majoribus Alemanniæ) constructed a siege engine known as the fox (vulpem) which collapsed when rushed into action at the siege of Nicaea in 1097.
Henry was among a group of knights who guarded Adhémar de Monteil, Bishop of Puy-en-Valay, in the mountains above the port of St. Simeon after they discovered what they mistakenly believed to be the Holy Lance.
The other knights guarding the bishop included Peter of Dampierre-le-Château, Count of Astenois, his nephew Reinhard III, Count of Toul, Reinhard of Hamersbach, Warner of Grez, and Walter, avoué of St. Valery-sur-Somme and viscount of Domart-en-Ponthieu (husband of Hodierna, daughter of Guy I of Montlhéry).