High Quality Content by WIKIPEDIA articles! Henry IV (c. 1112 – 14 August 1196), called the Blind (l`Aveugle or der Blinde), was count of Luxembourg from 1136 and count of Namur from 1139 until his abdication in 1189. He was the son of Godfrey I of Namur and Ermesinda, daughter of Conrad I of Luxembourg.