During the late Middle Ages, the two cities of Argos and Nauplia formed a lordship within the Frankish-ruled Morea in southern Greece.
Larisa, the citadel of Argos, extensively refortified in the 13th–14th centuries
Relief of the Venetian Lion of Saint Mark on the Akronauplia fortress
Battle of Halmyros
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The Battle of Halmyros, known by earlier scholars as the Battle of the Cephissus or Battle of Orchomenos, was fought on 15 March 1311, between the forces of the Frankish Duchy of Athens and its vassals under Walter of Brienne against the mercenaries of the Catalan Company, resulting in a decisive victory for the mercenaries.
Seal of the Grand Catalan Company, c. 1305
The plain of Halmyros, as seen from the Othrys mountains
Fragments of Walter of Brienne's seal, appended to his last testament, written on 10 March 1311