Theodore I, Marquess of Montferrat

Theodore I Palaiologos or Palaeologus (full name:Theodore Komnenos Doukas Angelos Palaiologos) (c. 1291 – April 24, 1338) was Marquess of Montferrat from 1306 until his death.

He was a son of Emperor Andronikos II Palaiologos and Irene of Montferrat. When his uncle John I died in 1305, the male line of the Aleramici marquesses of Montferrat went extinct; Theodore, his close kinsman, inherited Montferrat. He disembarked in Genoa in 1306, slowly gaining the Montferrat territory contended by Manfred IV of Saluzzo, the Acaja family and King Charles II of Anjou. In 1310 he received the imperial investiture from emperor Henry VII.

In 1307 he married a Genoese lady, Argentina Spinola, daughter of the lord of that city, Opicino Spinola. They had two children, John (1313–1372) and Yolande (1318–1342), who married Aimone, Count of Savoy.

Theodore died at Trino Vercellese in 1338. He was succeeded by his son John II.

Ancestors

Preceded by John I

Marquess of Montferrat 1296–1338

Succeeded by John II