John I, Lord of Cuijk (died 13 July 1308). ? Irmgard (died 1 August 1297), was abbess of Val-Benoît. Sources Table 60. References External links Die territoriale Entwicklung Nassaus by Ulrich Reuling. . Retrieved on 2009-01-26. Genealogies of the Middle Ages. Nassau in: Medieval Lands. A prosopography of medieval European noble and royal families Compiled by Charles Cawley Christians of the Third Crusade Christians of the Sixth Crusade Counts of Nassau 12th-century people of the Holy Roman Empire 13th-century people of the Holy Roman Empire 1180s births 13th-century deaths Year of birth uncertain Year of death uncertain