Aristide[1] Vermuellen was a Kovirian prince and Duke of Creyden who also served as the head of intelligence for his father-in-law King Esterad Thyssen. He married Gaudemunda Thyssen who bore him a son, Guiscard Vermuellen.[2]

His intelligence service was known to cooperate with several dwarven banks including those of Vivaldi and Cianfanelli.[1]


  1. 1.0 1.1 Wiedźmin: Gra Wyobraźni
  2. The Tower of the Swallow
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