Jean III Doukas Vatatzès

See also: Jean III

Jean III Doukas Vatatzès was Byzantine emperor in exile with Nicée between 1222 and 1254.

Born with Didymotique (today Nymphaion), in Thrace, 1193, and died the November 3rd 1254 with Kemalpasa, it was wire of Basile Vatatzès and a girl of Isaac Ange, an uncle of Isaac II and Alexis III Angel.

He had married a girl of Theodore Ier Lascaris, who chooses it for successor because of his military value.

He endeavoured to reconstitute the Byzantine Empire, destroyed by the crusaders of the Fourth crusade and with Poimanenon in 1224 beat them. It increases its field at the expense of the Vénitiens. It occupied Andrinople. Combined Bulgarian , it in vain besieged Constantinople in 1235.

The Turks threatened then its States, but it was saved by the invasion of the Mongolian which destroyed the Turkish power in 1244.

It intervened against the despotic of Epire, seized Thessalonique in 1246 and engaged of the talks to try to reconquer Constantinople.

He had married in 1212 Irene († 1239), girl of Theodore I {{er}} Lascaris, emperor of Nicée, and Anne Ange, and had a son: the future emperor of Nicée Theodore II Lascaris. Irene Lascaris however preferred to leave it about 1240 to enter the orders under the name of Eugenie sister. It remaria in 1244 with Constancy of Hohenstaufen (1230-1307), girl of the emperor Frederic II of the Holy roman Empire and Bianca Lancia.

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