The Battle of Marseille–Nice (1451) were two naval actions fought between a Portuguese fleet against Pirates in December 1451 off Marseille and near Nice, during the voyage escorting Princess Eleanor of Portugal to Italy.Saturnino Monteiro, Batalhas e combates da Marinha Portuguesa: 1139-1521, 1989, p. 53.Coelho, A política matrimonial da dinastia de Avis: Leonor e Frederico III da Alemanha, (2002-2003) p. 59.
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