The Battle of Tejo took place in July 1384, in the Tagus river (Tejo in Portuguese), between a Portuguese naval force of 34 ships (5 of which were major vessels) with the objective of supplying the besieged city of Lisbon with much needed supplies and the Castilian fleet led by Sanchez de Tovar. Although the Portuguese lost three ships (Castilian casualties are unknown), Portuguese success in reaching Lisbon and breaking the blockade with much needed supplies was a major victory for Portugal. The Castilians would later retreat from the siege.
See also History of Portugal John I of Portugal Kingdom of Portugal Treaty of Windsor (1386) João das Regras Hundred Years War
Notes
References Fernão Lopes, Crónica de D. João I, Livraria Civilização, Porto, 1945, Vol. I, pp 233, 239, 244, 250, 254, 256, 259 Ignacio da Costa Quintella, Annaes da Marinha Portugueza, Academia Real das Sciencias, Lisboa, 1839, Tomo I, p. 45 Tancredo de Morais, História da Marinha Portuguesa, Clube Militar Naval, Lisboa, 1940, p. 185 António Rodrigues Pereira, História da Marinha Portuguesa, Escola Naval, Lisboa, 1983, Parte I, p. 147 Oliveira Martins, Vida de Nun'Álvares, Parceria António Maria Pereira, Lisboa, 1944, p. 202 Cesáreo Fernandez Duro, La Marina de Castilla, EDITMEX, Madrid, 1995, p. 148 Joseph Alvarez de la Fuente, Sucession Real de España, Herderos de Francisco del Hierro, Madrid, 1735, Parte Tercera, p. 157