The Duchess of Holstein refers to a noble title associated with the historical region of Holstein in northern Germany. This title was often held by women who were married to the Duke of Holstein or were members of the ruling family. The duchy played a significant role in the politics of the Holy Roman Empire and later in the history of Denmark and Schleswig-Holstein. Throughout history, the title has been linked to various royal families, including the House of Oldenburg. The duchess would typically have responsibilities related to the management of estates and the welfare of her subjects, often participating in social and cultural events within the court.