"Dirk III (also called Dirik or Theodoric) was Count of Holland from 993 to 27 May 1039, until 1005 under regency of his mother. It is ...
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thought that Dirk III went on pilgrimage to the Holy Land around 1030, hence his nickname of Hierosolymita ('the Jerusalemite' in Latin)." - (en.wikipedia.org 10.04.2021)