DIRK, son of ARNULF Count of Holland & his wife Liutgard de Luxembourg ([981/89]-27 May 1039). The Annales Egmundani name "Theodricus III filius eius [=Arnulfi comitis]" when recording that he succeeded his father[281]. The Chronologia Johannes de Beke names (in order) "Theodricum succedentem comitem…et Sifridum sive Sicconem presidem" as the children of Count Dirk III & his wife[282]. He succeeded his father in 993 as DIRK III Count of Holland. "Theodericus comes cum matre sua Lietgarda" donated "alodum suum situm secus fluvium Scaldum in pago Gandensi seu Tornacensi in vulla Rucga" to Saint-Pierre de Gand, for the soul of "patris sui Arnulfi", by charter dated 20 Sep 995[283]. Count Dirk III had a stronghold in Vlaardingen, usurped property belonging to the bishop of Utrecht in the Vlaardingen area, and introduced a toll on ships passing along the river Merwede to Tiel without the consent of the emperor or the bishop[284]. Thietmar records that "Dietrich the empress's nephew" attacked Adalbold Bishop of Utrecht in 1018, before his forces were attacked by the Frisians and suffered numerous casualties[285]. "Thiederici Fresoniæ" witnessed a donation of property dated "Id Sep 1024" by "Hildigunda abbatissa de Gesike" and one dated "18 Kal Oct [1029]" by "Brun comes cum uxore sua Ida"[286]. Beke's Egmondsch Necrologium records the death "1039 VI Kal Iun" of "tercius Theodericus Hollandie…comes"[287].
m OTHELINDIS, daughter of --- (-in Saxony 9 Mar [1043/44], bur in Saxony). The Annales Egmundani name "Othelhildis comitissa" as wife of "Theodericus comes quartus [Hollandensium]" but do not give her origin[288]. According to Europäische Stammtafeln[289], she was Othelindis von Haldensleben, daughter of Bernhard I Markgraf der Nordmark Graf von Haldensleben, but the primary source on which this is based has not yet been identified. The Chronologia Johannes de Beke records the marriage of "Theodericus…tercius…comes Hollandie" and "Utilhildim filiam…ducis Saxonie"[290]. The corresponding duke of Saxony would have been the Billung Duke Bernhard I (who died in 1011). However, if Duke Bernhard was Othelindis's father, the wife of Count Dirk III's son Count Floris would have been his first cousin on his mother's side, which seems unlikely to be correct. "Theodericus…Holtlandensis comes…Florentii filius" recites the ownership history of properties claimed by the church of Utrecht in Holland, including donations by "Theodericus tertius, predicti Arnulfi filius, cum coniuge sua Othelhildis", by spurious charter dated 26 Jul 1083, probably written in [1130][291]. The Annales Egmundani record the death in 1044 of "Othilhildis comitissa"[292]. The Chronologia Johannes de Beke records that "Othilhildis…comitissa" returned to Saxony after her husband died, and that she died there "1043 VII Id Mai" and was buried there[293]. Beke's Egmondsch Necrologium records the death "1043 VII Id Mar" of "Othelhildis comitissa rediens ad Saxoniam"[294].
Count Dirk III & his wife had four children