Heerser
Heerser is a Dutch noun meaning a ruler or sovereign—someone who governs a territory or realm, typically within a monarchical, feudal, or autocratic framework. The term is used for kings, emperors, princes, dukes, or other figures who exercise political authority over a definite domain. In historical or literary contexts, a heerser may be described as holding power through conquest, succession, or hereditary right, and a region’s governance is often referred to as under his heerschappij.
Etymology and related terms: Heerser is formed from the noun heer (lord) with the agent suffix -er,
Usage and connotations: In contemporary Dutch, the term is most often found in historical writing, literature,
Other notes: Heerser can occasionally appear as a surname in Dutch-speaking areas, though this usage is uncommon