Background
He was the son of Gerard III, Count of Rieneck and Cunegonde Zimmern.
Bishop of Liège dukes of Brabant
He was the son of Gerard III, Count of Rieneck and Cunegonde Zimmern.
Then he helped Jean d'Eppes, bishop of Liege in repelling attacks Waleran, Lord of Valkenburg, in 1238. The following year he reconciles Henry II, Duke of Brabant and Wautier Bertout, Lord of Mechelen. In 1240, he joined forces with the dukes of Brabant and Limburg an attempt to reconcile Pope Gregory IX with the Emperor Frederick II. In 1244, a war is contrasted with Henry of Heinsberg.
The dispute between the pope and the emperor festered, the pope excommunicated the emperor, and called on voters to choose another: William of Holland and Arnold attended his coronation. To keep their fiefdoms from suffering the disorders of anarchy following the death of Frederick II, Bishop of Liege, the Duke of Brabant, and Count of Gelderland entered a confederation entrusted with their common defense. Arnold enjoyed the esteem and confidence of his contemporaries, and arbitrated several disputes to this title.
He granted freedom to Hasselt and Kuringen, granted city status in Bilzen and made several donations to monasteries. Arnold and Jeanne had the following children:
John, Count of Chiny and Loon
Arnaul II (d 1273), Bishop of Châlons (1272-1273)
Henri de Looz, Seigneur d’Agimont
Gerard de Looz (d after Apr 1284), Seigneur de Chauvency le-Château, married Marguerite de Meurs
Elisabeth (d before 1251) married first Thomas III of Coucy, Seigneur of Vervins, and second Albert, Seigneur of Voorne
Adelaide (d after 1268), married to Thierry II, Seigneur of Valkenburg
Juliane, married to Nicolas, Seigneur of Quiévrain
Louis V, Count of Chiny
Marguerite (d 1292), married Willem IV, Seigneur of Horn.