John Byron in the context of George Anson's voyage around the world

The Taitao Peninsula (Spanish: Península de Taitao) is a westward-facing landmass on the south-central Pacific west coast of Chile. The peninsula is connected to the mainland via the narrow Isthmus of Ofqui, over which tribal peoples and early missionaries often traveled to avoid navigating the peninsula's treacherous waters, carrying their boats and belongings overland between the Moraleda Channel and Gulf of Penas. The Taitao Peninsula is situated in the Aysén del General Carlos Ibáñez del Campo Region, and part of the landmass is located inside the boundaries of Laguna San Rafael National Park. The Presidente Ríos Lake, with a surface area of 352 square kilometres (136 sq mi), lies in the center of the peninsula. A southward-incurving projection of its outer shoreline is known as Tres Montes peninsula, the most southerly point of the cape of the same name.

Spanish explorers and Jesuits that sailed south from Chiloé Archipelago in the 17th and 18th centuries regularly avoided rounding Taitao Peninsula entering instead the Gulf of Penas after a brief land crossing at the isthmus of Ofqui. While attempting to pass the Gulf of Penas in 1741, a storm caught the British ship, HMS Wager, causing it to wreck on (the eventual) Wager Island, on the Guayaneco Archipelago. Some of the survivors, including John Byron, were led into the Spanish settlements of the Chiloé Archipelago by the Chono chieftain Martín Olleta via Presidente Ríos Lake.

Gilbertese (taetae ni Kiribati), also known as Kiribati (sometimes Kiribatese or Tungaru), is an Austronesian language spoken mainly in Kiribati. It belongs to the Micronesian branch of the Oceanic languages.

The word Kiribati, the current name of the islands, is the local adaptation of the European name "Gilberts" to Gilbertese phonology. Early European visitors, including Commodore John Byron, whose ships happened on Nikunau in 1765, had named some of the islands the Kingsmill or Kings Mill Islands or for the Northern group les îles Mulgrave in French but in 1820 they were renamed, in French, les îles Gilbert by Admiral Adam Johann von Krusenstern, after Captain Thomas Gilbert, who, along with Captain John Marshall, had passed through some of these islands in 1788.Frequenting of the islands by Europeans, Americans and Chinese dates from whaling and oil trading from the 1820s, when no doubt Europeans learnt to speak it, as Gilbertese learnt to speak English and other languages foreign to them. The first ever vocabulary list of Gilbertese was published by the French Revue coloniale (1847) by an auxiliary surgeon on corvette Le Rhin in 1845. His warship took on board a drift Gilbertese of Kuria, that they found near Tabiteuea. However, it was not until Hiram Bingham II took up missionary work on Abaiang in the 1860s that the language began to take on the written form known now.

HMS Dolphin was a 24-gun sixth-rate frigate of the Royal Navy. Launched in 1751, she was used as a survey ship from 1764 and made two circumnavigations of the world under the successive commands of John Byron and Samuel Wallis. She was the first ship to circumnavigate the world twice. She remained in service until she was paid off in September 1776. She was broken up in early 1777.

Presidente Ríos Lake (Spanish pronunciation: [pɾesiˈðente ˈri.os]) is located in the Aysén del General Carlos Ibáñez del Campo Region of Chile. It lies in the middle of the Taitao Peninsula.

While the lake's existence only became known in Chile in 1945, it appears to have been known by Chono natives, who led 19 survivors of HMS Wager (including Captain David Cheap and Midshipman John Byron) from Wager Island through it in 1742. The Chonos, who often had a hostile relationship with the Spanish, kept the lake secret from them despite serving the Spanish as maritime pilots. Despite official discovery in 1945, the lake was already known to seafarers from Chiloé.