Arnold I, Count of Laurenburg

Arnold was a son of Dudo of Laurenburg (German: Dudo von Laurenburg) and the fourth of the seven daughters of count Louis I of Arnstein, possibly her name was Irmgardis or Demudis.

[1] Arnold is mentioned as count of Laurenburg between 1124 and 1148.

[1][2] Arnold and Rupert built Nassau Castle around 1124.

Idstein had come under the control of Count Dudo in 1122.

[citation needed] Arnold was the Vogt of St. George's Monastery in Limburg 1124–1148.