Medlands shows "ALBERT de Namur (-[1063/64])" or Albert II as having two sons and no daughters.
Either Medlands missed sources for other children b. of Albert II and Regilinde, or two daughters are connected to Albert II and Regilinde and need reassignment/merging to Albert I.
http://fmg.ac/Projects/MedLands/NAMUR.htm#AlbertIIdied1063
— a) ALBERT de Namur (before 10 Aug 1035-22 Jun 1102). The Genealogica comitum Buloniensium records that "Albertum comitem de Namuco" was father of "Albertum et fratrem eius Heinricum comitem de Durboio"[50]. He succeeded his father as ALBERT III Comte de Namur. — see below.
— b) HENRI [I] de Namur (-after 23 Apr 1088). The Genealogica comitum Buloniensium records that "Albertum comitem de Namuco" was father of "Albertum et fratrem eius Heinricum comitem de Durboio"[51]. The Chronicon Huberti names "Albertus comes Namucensis et Henricus Durboiensis", but does not specify the relationship between them[52]. Comte de Durbuy. "Heinricus…Romanorum imperator augustus" confirmed donations to St Jakob, Liège by charter dated 23 Apr 1088, at the request of "Heinrico comite de Durbui"[53]. — COMTES de DURBUY.
Medlands shows "ALBERT, son of ROBERT [I]" who married "Ermengarde" (aka Albert I) as having sons and daughters, including:
http://fmg.ac/Projects/MedLands/NAMUR.htm#AlbertIdied1011B
— Hedwige of Lorraine who married "m GERARD Duke of Upper Lotharingia, son of GERHARD Graf & his wife Gisela --- (-Remiremont [14 Apr] or 11 Aug [1070]),"
— ¿ Ermengard IV van Namen ?,
— Goda de Namur.
