Floris I of Holland (born ca. 1020/1030 in Vlaardingen - killed June 28, 1061 in Gelderland, Netherlands) was Count of Holland (which was called Frisia at that time) from 1049 to 1061. He was a son of Dirk III and Othelindis. He succeeded his brother Dirk IV who was murdered in 1049. He was involved in a war of a few Lotharingian vassals against the imperial authority. On a retreat from Zaltbommel he was ambushed and killed in battle at Nederhemert (called Hamerth at the time), on 28 June 1061. Family and childrenHe married ca. 1050 Princess Gertrude of Saxony, daughter of Bernard II, Duke of Saxony and Eilika of Schweinfurt, and had at least three children by her:
Gertrude married secondly in 1063 Robert the Frisian, Count of Flanders, who also acted as guardian for the children of her previous marriage and as regent for his stepson until 1071.
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