Ancestral Trails 2016 » Johan Jacob de MONTFERRAT (1395-1445)

Personal data Johan Jacob de MONTFERRAT 


Household of Johan Jacob de MONTFERRAT

He is married to Joanna de SAVOY.

They got married on April 26, 1411, he was 16 years old.


Child(ren):

  4. Jean de MONTFERRAT  1413-1464


Notes about Johan Jacob de MONTFERRAT

John Jacob Palaeologus (Italian: Giovanni Giacomo Paleologo) (March 23, 1395 - March 12, 1445) was the Margrave of Montferrat from 1418 to 1445.

He was born in Trino, Piedmont, the son of Theodore II of Montferrat, with whom he collaborated in the government of the marquisate from 1404. In 1412 he married Joanna of Savoy, sister of Duke Amadeus VIII, who gave him numerous children.

After his father's death in 1418, John Jacob received the investiture as marquess by emperor Sigismund. He distinguished himself for some brilliant military campaign in the Apennines area; he also increased his prestige through the marriage between his sister Sofia and the second last Byzantine Emperor, John VIII Palaiologos.

John Jacob's expansion, however, spurred the reaction of the Dukes of Savoy and of Filippo Maria Visconti of Milan. In 1431 they signed an alliance aiming at the cancellation of the Montferrat state. John Jacob was therefore compelled to ask support to France. In 1432 he was defeated anyway and sued for peace, ceding several territories to Savoy but retaining the seigniory over Montferrat, although with the status of Savoy vassal.

However, when Amadeus VIII asked him the payment of the war expenses, John Jacob rebelled; but, after having besieged in Chivasso, he was forced to cease. His state and his prestige were shattered, and he had again to declare himself vassal of Savoy.

John Jacob died at Casale Monferrato in 1445, being succeeded by his son John IV.

John Jacob married on April 26, 1411 with Joanna of Savoy (1395-1460), daughter of Amadeus VII, Count of Savoy. They had :

John IV (1413 - 1464), Marquess of Montferrat 1445-1464.
Amadea (1418 - 1440), married to John II de Poitiers-Lusignan, king of Cyprus.
Isabella (ca. 1419 - 1475); married to Ludovico I del Vasto, Marquess of Saluzzo.
William VIII (1422 - 1483), Marquess of Montferrat 1464-1483.
Boniface III (1424 - 1494), Marquess of Montferrat 1483-1494.
Theodoro (1425 - 1481), cardinal.
SOURCE: Wikipedia

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Timeline Johan Jacob de MONTFERRAT

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Ancestors (and descendant) of Johan Jacob de MONTFERRAT


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Historical events

Birthday March 23, 1395

Day of marriage April 26, 1411

  • Graaf Willem VI (Beiers Huis) was from 1404 till 1417 sovereign of the Netherlands (also known as Graafschap Holland)
  • In the year 1411: Source: Wikipedia
    • February 1 » The First Peace of Thorn is signed in Thorn (Toruń), Monastic State of the Teutonic Knights (Prussia).
    • February 17 » Following the successful campaigns during the Ottoman Interregnum, Musa Çelebi, one of the sons of Bayezid I, becomes Sultan of the Ottoman Empire with the support of Mircea I of Wallachia.
    • June 4 » King Charles VI granted a monopoly for the ripening of Roquefort cheese to the people of Roquefort-sur-Soulzon as they had been doing for centuries.
    • July 6 » Ming China's Admiral Zheng He returns to Nanjing after the third treasure voyage and presents the Sinhalese king, captured during the Ming–Kotte War, to the Yongle Emperor.
    • July 24 » Battle of Harlaw, one of the bloodiest battles in Scotland, takes place.
    • September 3 » The Treaty of Selymbria is concluded between the Ottoman Empire and the Republic of Venice.

Day of death March 12, 1445



Same birth/death day

Source: Wikipedia

Source: Wikipedia


About the surname De MONTFERRAT


The Ancestral Trails 2016 publication was prepared by .contact the author
When copying data from this family tree, please include a reference to the origin:
Patti Lee Salter, "Ancestral Trails 2016", database, Genealogy Online (https://www.genealogieonline.nl/ancestral-trails-2016/I56836.php : accessed June 21, 2024), "Johan Jacob de MONTFERRAT (1395-1445)".