Fidalgo was born in La Seu d'Urgell in the province of Lleida, Catalonia, Spain, the heir of a noble Navarrese family. He entered joined the Spanish Navy as a guardiamarina at the Real Colegio de Guardiamarinas in Cádiz. He graduated in 1775 and given the rank of Alférez de Fragata. He was chosen to be a member of Vicente Tofiño's team of cartographers working during the 1780s on the first atlas of Spain's ports and coastal waters. He served on various assignments in the Mediterranean and saw action against the British and Portuguese. In 1778 he was promoted to Teniente de Navío and assigned to the Spanish naval station at San Blas, Mexico.
Spain and the Pacific Northwest
The Spanish claim to Alaska and the Pacific Northwest had dated back to a 1493 papal bull and rights contained in the 1494 Treaty of Tordesillas; these two formal acts gave Spain the exclusive rights to colonize all of the Western Hemisphere, including the exclusive rights to colonize all of the west coast of North America. The first European expedition to actually reach the west coast of North America was led by the Spaniard Vasco Núñez de Balboa, which achieved the Pacific coast of Panama in 1513. Balboa claimed the Pacific Ocean for the Spanish Crown, as well as the lands touching it, including all of the west coast of North America. This action of Balboa further solidified the Spanish claim of exclusive control over the entire west coast of North America. The claims unchallenged, the Spanish Empire did not explore or settle the northwest coast of North America in the 250 years after Balboa's claim. By the late 18th century, however, learning of Russian Empire and British arrivals along the Pacific coast, Spain finally grew sufficiently concerned about their claims to the Pacific Northwest and set out to learn the extent of the Russian and British encroachment.
Fidalgo expedition of 1790
In 1790, at the direction of Juan Vicente de Güemes Padilla Horcasitas y Aguayo, 2nd Count of Revillagigedo, the Viceroy of New Spain, Fidalgo was sent to New Spain's northernmost settlement, San Lorenzo de Nootka, just off today's Vancouver Island. In May 1790, Fidalgo sailed out of Nootka and some weeks later, anchored off present-day Cordova, Alaska. The expedition found no signs of Russian presence, and traded with natives in the area. On June 3, 1790, they put ashore on today's Orca Inlet, and in a solemn ceremony, Fidalgo erected a large wooden cross, re-asserted Spanish sovereignty, and named the area Puerto Córdova. Fidalgo continued along the Alaskan coast, reaching today's Gravina Point, where the same ceremony re-asserting Spanish sovereignty was performed. On June 15, 1790, they discovered a port, which they named Puerto Valdez, after Antonio Valdés, then Minister of the Spanish Navy. On July 4, 1790, the expedition made their first contact with the Russians, on the southwestern coast of the Kenai Peninsula, which Fidalgo named Puerto Revillagigedo. The expedition pressed on to the main Russian settlement of the time on Kodiak Island, in today's Three Saints Bay. Fidalgo entertained the Russians aboard his ship, and then on July 5, 1790, conducted another ceremony of sovereignty, near the Russian outpost of Alexandrovsk, southwest of today's Anchorage on the Kenai Peninsula. Fidalgo led the expedition back to San Blas, arriving on November 15, 1790.
In 1792 Salvador Fidalgo was assigned to establish a Spanish post at Neah Bay, on the southwestern coast of the Strait of Juan de Fuca in present-day U.S. state of Washington. He arrived from San Blas on the corvettePrincesa on May 28, 1792. The post soon had cleared land for a garden, a livestock enclosure with a number of cows, sheep, hogs, and goats, and a stockade with a small garrison. The post was established during the Nootka Convention negotiations between Spain and Britain in the wake of the Nootka Crisis. It was uncertain whether the Spanish post at Nootka Sound would be ceded to the British or not. Fidalgo's work at Neah Bay was in preparation for a possible relocation of Spain's Nootka Sound post. Later during the autumn of 1792 a conflict occurred between the Makah, natives of Neah Bay, and the Spanish. Fidalgo's second in command, Pilot Antonio Serantes, was killed and in retaliation Fidalgo ordered an attack on the Makah, inflicting many casualties. For this action Fidalgo was later reprimanded by his superior officers. The post at Neah Bay was abandoned and Fidalgo was recalled to Nootka Sound.
Later life
In 1794 Salvador Fidalgo was promoted to Capitán de Fragata. In 1795 he sailed to the Philippines to deliver diplomatic documents. In 1801 he suppressed a Native American rebellion at the Tiburón Island in the Gulf of California.
Death
He died on September 27, 1803 in Tacubaya, near Mexico City.