The installation of a Cistercian community in Orval in 1131 marked his last appearance in any proceedings.
He married Adelaide (Alix) (1068–1124), daughter of Albert III, Count of Namur and Ida of Saxony (widow of Frederick of Lower Lorraine).
Their children were: Ida (also known as Ida of Namur) and Godfrey I (also known as Godfrey the Bearded, not to be confused with the uncle of his father Henry II, Godfrey) were parents of Adeliza of Louvain, wife of Henry I of England.
Oda’s husband Gislebert was son of Otto, Count of Duras and therefore the grandson of Giselbert, the first Count of Looz, whose family would eventually be merged with the Counts of Chiny with the marriage of Otto's great-great granddaughter Jeanne, Countess of Chiny, with Arnold IV of Looz.
After his death, Otto was succeeded as Count of Chiny by his son Albert.