Walter became Lord of Egmond when his older brother, William III, died without offspring on 2 July 1312.
Under his rule the relationships of the house with the Egmond Abbey were normalized.
[1] In 1315 he participated with 60 of his people in a military expedition to Flanders.
Before 1310 he married Beatrijs van der Doirtoghe/Doortoge (c. 1290 -11 September 1323) from Naaldwijk.
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