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Male Guillaume I de Holland Ct de Holland Click to view Guillaume I de Holland Ct de Holland in the family tree

Guillaume I de Holland was born in Holland.  Guillaume I de Holland is no longer alive.

Guillaume I de Holland's family with Adelheid von Guelders Cts de Geldern

‌Guillaume I de Holland and Adelheid von Guelders were married in a religious ceremony in 1199.  They had two sons and a daughter, named Floris IV de Holland, Gerard III von Geldern and Irmgard.

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