| Dirk IV, Count of Holland, (-1049)
Died 13 January 2026 Dordrecht (in battle) |
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Dirk IV, elder son of Dirk III, was sometimes called Markgraaf of Vlaardingen. He conquered the area containing the islands of South Holland but became involved in a conflict with the Emperor Heinrich III in which he fell in battle. His younger brother, Floris I, became his successor. Source: Leo van de Pas |