1228. According to privileges that were falsely ascribed to the Carolingian era, the potestate was chosen by council and he must be able to slay knights. Apocryphal historical writings mention the potestate as early as the Viking Age. The only potestates chosen to lead Friesland between the Vlie and Lauwers were Juw Juwinga (1396) and Juw Dekema (1494), both were chosen by the Schieringers. However, in 1399 the districts of Westergo and Oostergo elected potestates, Haring Harinxma and Sjoerd Wiarda respectively, in the struggle against the count of Holland. The title became well known outside of Friesland only with the installation of Albrecht of Saxony as hereditary potestate in 1498; the Frisians chose Jancko Douwama as their imperial stadtholder (1522). Partial list of legendary and historical potestates Magnus Forteman (810), legendary Taco Ludigman (819), legendary Adelbrik Adelen (830), legendary Hessel Hermana (869), legendary Igo Galema (886), legendary Gosse Ludigman (989), legendary Saco Reinalda (1167), legendary Sicko Sjaerdema (1237) Reinder Cammingha (1306) Hessel Martena (voor 1313) Juw Juwinga (1396) Sytse Dekama, Gale Hania and Odo Botnia (1399) Sjoerd Wiarda and Haring Harinxma (1404) Juw Dekama (1494) See also Capitano del popolo Capitano reggente Gonfaloniere Podestà of Constantinople Reading Brouwer, J.H., J.J. Klama, W. Kok, and M. Wiegersma, eds., Encyclopedie van Friesland, (Amsterdam: Elsevier, 1958) s.v. Potestaat van Friesland Encyclopædia Britannica 1911: "Frisians" Janet Hongyan Woo, "Tension in Siena : Site Selection and Room Arrangement of Piazza Pubblico" Burckhardt, Jakob, The Civilization of the Renaissance in Italy: "The State as a Work of Art", trans. 1878 A. M. H. J. Stokvis, Manuel d'histoire, de généalogie et de chronologie de tous les états du globe depuis les temps les plus reculés jusqu'à nos jours; vol. iii Westermann, Großer Atlas zur Weltgeschichte (in German) WorldStatesmen - Turkey William Francis Thomas Butler, Lombard Communes: A History of the Republics of North Italy (1982) References Legal history of Italy Medieval Italy Italian city-states 2nd millennium in Italy Gubernatorial titles Heads of government Heads of state Heads of local government Potestaats of Friesland