[1]) The mother of Emmo and Otto on the other hand is clearly named in one near-contemporary record, as Ludgarde, sister of Albert, Count of Namur.
[2] In a charter dated 1065, Adalbero III of Luxembourg, Bishop of Metz, confirmed Otto’s rights in regard to the abbey.
This was partly necessary because the bishop had given a superior advocacy to his own brother Duke Frederic, and disputes did eventually arise between the Abbey and its advocates.
The 3rd continuation of the Gesta of St Truiden Abbey, written in the 14th century, is the only medieval source which describes Otto as a Count of Duras, which is a title that his son Gilbert later used.
According to an old proposal of Mantelius which Baerten supported, Otto must have married the heiress of the previous known advocate, whose name was Giselbert, and inherited both a county and advocacy.