Columbia subject headings:
Holy Roman Empire--Genealogy.
Holy Roman Empire--Historiography.
Holy Roman Empire--History--To 1517.
Harvard subject headings:
Germany--Kings and rulers--Genealogy.
Holy Roman Empire--History--To 1517.
Holy Roman Empire--Kings and rulers--Genealogy.
Princeton subject headings:
Holy Roman Empire--Genealogy.
Holy Roman Empire--Historiography.
Holy Roman Empire--History--To 1517.