Arnold V, Count of Loon

Barely Count of Looz, he helped Richardis of Guelders, widow of his maternal grandfather, Henri, Count of Luxembourg and Reginald I of Guelders, to fight Siegfried von Westerburg, archbishop of Cologne.

Taken prisoner, the latter had to pay a large ransom to regain his freedom He then had to deal with the relatives of Isabelle de Condé, his father's widow, and in 1281 had to assign her a dower, and cede Warcq, Agimont and Givet to his half-brothers Jean and Jacquemin.

In 1288, he commanded a corps of the army of John I, Duke of Brabant, and contributed much to the victory on June 5 in the famous Battle of Worringen (on the Rhine), which ended the War of Limburg succession between Renaud, Count of Gelderland, husband of Ermingarde heiress, Duchess of Limburg (+ 1283), and the Duke of Brabant.

[1] He took part in the War of the Awans and the Waroux between the families of Awans and Waroux, from 1297 to 1335, on the side of the bishops of Liège, Hugues de Chalon (from 1396 to 1301) and Adolph II of La Marck (from 1313 to 1344), Hesbaye being dependent on these princes.

In 1312 on the death of Bishop Theobald of Bar, he tried to once again be Mambour of Liège, but had to face the revolt of the bourgeoisie.