He was born around 1360 as the first son of John II and Isabella of Majorca. In December 1361, as part of a peace deal made between John II and Galeazzo II Visconti, co-lord of Milan, he was betrothed to the latter’s four-year-old daughter Maria. The city of Asti, on which Galeazzo had also had designs, was to count as part of Maria’s dowry, and Montferrat would be allowed to retain control of it. The peace was short-lived, however, as Maria died in the May of the following year.

He succeeded as a child of around 12, and ruled originally under the co-regency of his uncle Otto, Duke of Brunswick-Grubenhagen, and Amadeus VI of Savoy. His father’s will had stipulated that he should remain under his uncle’s tutelage until the age of 25; however Otto left for Naples in 1376 to marry Queen Joan I.

Weak and inept, Secondotto could not carry the weight of government which devolved on his shoulders with the absence of his uncle. Secondotto thus decided to marry Violante (2 August 1377), the daughter of Galeazzo II Visconti, and widow of Lionel of Antwerp, 1st Duke of Clarence, and affirm an alliance with that family against the House of Savoy, Piedmont and Achaea.

When Otto of Brunswick's brother attacked and seized Asti, Secondotto called in the aid of his father-in-law, who, with a huge force, retook Asti and maintained it under Milanese control. Secondotto realised at that juncture the danger of his Milanese alliance, but by then it was too late. He gathered a force and led it against the Milanese troops and was defeated. Probably out of fear, he retreated to an unknown destination. He died at Langhirano in the vicinity of Parma in obscure circumstances: he may simply have been the loser in a brawl (he was famously ill-tempered and violent), or he may have been assassinated by an agent of the Visconti. His body was carried to Parma and buried before the high altar of the cathedral.

When his uncle received news of his death, he returned at once to the margraviate to handle the succession. He placed Secondotto's brother John III on the Montferrat throne. Despite the involvement of Emperor-elect Wenceslaus, the negotiations which Otto opened with Gian Galeazzo over the recovery of Asti were fruitless.

Ancestry

Notes