Career
In his day, the march orientalis corresponded to a front along the Danube from the Traungau to the Szombathely and Raba rivers and including the Vienna basin. lieutenant was a military frontier zone against Great Moravia. They were replaced by Aribo, but Engelschalk"s son Engelschalk II led their heirs in rebellion against Aribo in what became known as the Wilhelminer War from 882 to 884.
The "Wilhelminers" were descendants of Engelschalk"s father, William I.
