Vanech was a Breton Arch-Priest of Kynareth in 3E 402.[1] When the kingdoms of Sentinel and Daggerfall went to war over who was to control Betony Island in the Iliac Bay, he considered the island a holy realm of Kynareth and refused to cede it to Hammerfell.[1][2]
At the negotiations between the High Rock city-state Reich Gradkeep agreed to meditate between Lysandus of Daggerfall and Camaron of Sentinel, Vanech submitted a fake treaty which made Camaron upset and eventually plunged the city-state into chaos. The fake treaty that Vanech signed led to total war between Daggerfall and Sentinel.[2][3]