Dirk I of Holland
Appearance
![](http://upload.wikimedia.org/wikipedia/commons/thumb/f/f5/Diederik%2C_eerste_hertog_der_West-Friezen_Didericus._Dux_Frisiae_Occidentalis_Primus_%28titel_op_object%29_Koningen_en_Potestaten_van_Friesland_%28serietitel%29_Frisia%2C_sev%2C_de_Viris_%28serietitel_op_object%29%2C_RP-P-OB-50.632.jpg/220px-thumbnail.jpg)
Dirk I was count of West Frisia, later known as the County of Holland. He is thought to have been in office from c. 896 to c. 928 or 939.
Dirk I was count of West Frisia, later known as the County of Holland. He is thought to have been in office from c. 896 to c. 928 or 939.