Columbia subject headings:
Agnes, Empress, consort of Henry III, Holy Roman Emperor, approximately 1025-1077.
Crown jewels--Germany.
Jewelry, Medieval--Germany.
Harvard subject headings:
Agnes, of Poitou, consort of Henry III, Holy Roman Emperor, 1025?-1077.
Crown jewels--Germany.
Jewelry, Medieval--Germany.
Princeton subject headings:
Franconian House.
Jewelry, Medieval--Germany.
Regalia (Insignia)--Germany.