Political map of southern Greece in c. 1210, after the establishment of the Crusader states following the Fourth Crusade.
<a href="//commons.wikimedia.org/wiki/User:Cplakidas" title="User:Cplakidas">Cplakidas</a>
CC BY-SA 4.0
<p>SVG base from <a href="//commons.wikimedia.org/wiki/File:Greece_in_1210V1.svg" title="File:Greece in 1210V1.svg">File:Greece in 1210V1.svg</a>; based on the <a href="//commons.wikimedia.org/wiki/File:Greece_in_1214.JPG" title="File:Greece in 1214.JPG">original political map</a> by William Miller (1908), with changes and corrections to account for newer scholarship: 
</p>
<ul><li>Map date has been moved to 1210, since by 1214, much of Thessaly and Salona had been recaptured by the Epirotes (cf. Fine, John Van Antwerp (1994). <i>The Late Medieval Balkans: A Critical Survey from the Late Twelfth Century to the Ottoman Conquest</i>, p. 68)</li>
<li>The Ghisi brothers are shown as independent of the Duchy of Naxos (cf. Setton, Kenneth M. (1976). <i>The Papacy and the Levant (1204–1571), Volume I: The Thirteenth and Fourteenth Centuries</i>, p. 19 note 78)</li>
<li>Argos and Nauplia are shown in Greek hands, since they were not conquered until 1212.</li>
<li>Corfu is still in Venetian hands, it was not recovered by the Epirotes until 1214 (cf. Fine, John Van Antwerp (1994). <i>The Late Medieval Balkans: A Critical Survey from the Late Twelfth Century to the Ottoman Conquest</i>, p. 68)</li>
<li>The Kingdom of Thessalonica, the Latin Empire, the Empire of Nicaea, and the fief of Lemnos under the Navigajoso family have been added with distinct colours</li>
<li>Monemvasia and the mountainous regions of Parnon, Taygetos, Mani are shown as not fully under Latin control, since Monemvasia was not conquered until 1248 and the mountains remained semi-autonomous even after that (cf. Bon, Antoine (1969). <i>La Morée franque. Recherches historiques, topographiques et archéologiques sur la principauté d’Achaïe</i>, pp. 71-73)</li></ul>
Any further suggestions for corrections or improvement are welcome.