Ermentrude

Example:She was recognized as Queen Ermentrude for her role in leading the state after her late husband Clovis I.

Definition:A female monarch, usually a wife of a king or the first female ruler. The term reflects the highest political and social position attainable by a woman in a monarchy.

Example:She was granted the title of Empress Ermentrude for her contributions to the empire.

Definition:The feminine equivalent of emperor, it denotes the highest rank of female rulers in many historical empires. While not exact, it's a more honorific title in certain contexts.