OTTO de Looz, son of [GISELBERT Comte de Looz] & his wife [Liutgarde de Namur] (-before 1088). The Vita Arnulfi names "Emmonem et Ottonem fratrem eius" as sons of Liutgarde, daughter of Albert [I] Comte de Namur[714]. From a chronological point of view, it is not possible for Emmo and his brother to have been the children of Otto de Looz who, as stated above, is recorded in another source as the husband of Liutgarde de Namur. No primary source has been identified which confirms that Emmo and Otto were the sons of Comte Giselbert, although this suggested parentage would fit the chronology of the family. "...Ottonis advocati et fratris eius Emmonis comitis de Los, Alberti comitis de Musal..." signed the charter dated 1059 under which "Fredericus...Lothariencium dux" donated a serf to Saint-Trond[715]. The Gesta Abbatem Trudonensium names "Ottonem comitem Durachii, fratrem Emmonis comitis de Los" when recording his installation in 1060 as subadvocatus of Saint-Trond[716].
m ODA, daughter of [GISELBERT Comte de Duras & his wife ---]. The Gesta Abbatem Trudonensium records that "comes Otto et filius eius Gislebertus de Durachio" donated "allodii...in villa...Meldreges, non longe a villa Lencholt" for the soul of "uxoris suæ Odæ...matris"[717]. Mantelius suggests that Oda was the daughter of Giselbert Comte de Duras and transmitted the avouerie of Saint-Trond (held by her father) to her descendants[718]. No primary source has been identified which confirms that this is correct, but it appears to be logical. Baerten points out that, assuming that Oda was heiress of the county of Duras, she could have been the daughter of either Giselbert or of his predecessor and older brother Godefroi[719].
Comte Otto & his wife had two children