Orundellico, known as "Jeremy Button" or "Jemmy Button" (c. 1815 – 1864), was a native Fuegian of the Yaghan (or Yámana) people from islands around Tierra del Fuego, in modern Chile and Argentina. He was taken to England by Captain FitzRoy in HMS Beagle and became a celebrity for a period.
In 1830, Captain Robert FitzRoy, at the command of the first expedition of the famous Beagle, took a group of hostages from the Fuegian indigenous people after one of his boats was stolen. Jemmy Button was paid for with a mother of pearl button, hence his name. It is not clear whether his family willingly accepted the sale or he was simply abducted. FitzRoy decided to take four of the young Fuegian hostages all the way to England "to become useful as interpreters, and be the means of establishing a friendly disposition towards Englishmen on the part of their countrymen." He seems to have shown great concern for the four, feeding them before his own officers and crew and intending them to be educated and Christianised so that they could improve the conditions of their kin.
The names given to the Fuegians by the crew were York Minster, Jemmy Button, Fuegia Basket (a girl) and Boat Memory. The original names of the first three were, respectively, el'leparu, o'run-del'lico and yok'cushly. Boat Memory died of smallpox shortly after his arrival to England, and his Yahgan name is lost.
Arrival in England
The Beagle arrived back in Plymouth from her first voyage of exploration in mid-October 1830. The newspapers soon started publishing details of the Yahgan visitors and they became celebrities. In London, they met King William IV. Fuegia Basket, a young girl, was given a bonnet from Queen Adelaide herself.
Return to Patagonia
One year later, Captain Fitzroy returned the three surviving Fuegans home, at great expense to himself. He took with him a young naturalist, Charles Darwin, in what was the second voyage of the HMS Beagle.
After initial difficulty recalling his language and customs, Jemmy soon shed his European clothes and habits. A few months after his arrival, he was seen emaciated, naked save for a loincloth, and long-haired. Nevertheless, he declined the offer to return to England, which Darwin conjectured was due to the presence of his "young and nice looking wife". It appears that he and the others had taught their families some English.
Wulaia Bay Massacre
In 1855, a group of Christian missionaries from the Patagonian Missionary Society visited Wulaia Bay on Navarino Island, to find that Jemmy still had a remarkable grasp of English. Some time later in 1859, another group of missionaries was killed at Wulaia Bay by the Yaghan, supposedly led by Jemmy and his family. In early 1860, Jemmy visited Keppel Island and gave evidence at the enquiry into the massacre, held in Stanley. He denied responsibility.
In 1863, the missionary Waite Stirling visited Tierra del Fuego and re-established contact with Jemmy; from then relations with the Yaghan improved. In 1866, after Jemmy's death, Stirling took one of Jemmy's sons, known as Threeboy, to England.
- Creation briefly recounts the story of Jemmy and the other children.
- The Pearl Button named in part after Jemmy Button tells of his journey 
- The Voyage of Charles Darwin (1978 serial) several episodes dramatize the Fuegians capture and later return to Tierra del Fuego.
- According to Julia Voss, the German children's book, Jim Knopf und Lukas der Lokomotivführer by Michael Ende, translated into English as Jim Button and Luke the Engine Driver, was based on Jemmy Button. Ende, who grew up in Nazi Germany, wanted to write a story that provided a contrast to Adolf Hitler's racist ideology and misuse of Darwin's theories of evolution. Ende's 1960 novel became one of the most successful children's books in postwar Germany and won the Deutscher Jugendliteraturpreis in 1961.
- Jemmy appears in Harry Thompson's debut novel This Thing of Darkness (2005)
- Jemmy features prominently in "Notes From the Scientific Record" in James Rollins' tenth Sigma Force novel, The 6th Extinction (2014).
- The Uttermost Part of the Earth by E L Bridges (1948) was republished in 2008 by Overlook Press (ISBN 978-1-58567-956-0).
- In Patagonia by Bruce Chatwin includes a fictionalised version of Orundellico's capture.
- The novel Jemmy Button by the Chilean writer Benjamin Subercaseaux was published in the 1950s and translated from Spanish by Mary and Fred del Villar (New York: The Macmilllan Company, 1954).
- La Tierra del Fuego by Sylvia Iparraguirre is another fictionalised version of the story.
- Harry Thompson's This Thing of Darkness (2005) contains a fictionalised account of Jemmy's time in HMS Beagle and in England, as well as the massacre at Wulaia Bay (ISBN 0-7553-0281-8).
- Savage: The Life and Times of Jemmy Button, a full account of Jemmy's life by English writer Nick Hazlewood was published in 2000 (ISBN 0-340-73911-8).
- Three Men of the Beagle by Richard Lee Marks (ISBN 0-394-58818-5)
- Jemmy Button by Jennifer Uman & Valerio Vidali (Words by Alix Barzelay, a children's picturebook version of the story of Jemmy Button's time in England.
- Jardine, Nicholas; Secord, James A.; Spary, E. C. (1996). Cultures of natural history. Cambridge: Cambridge University Press. p. 331. ISBN 978-0-521-55894-5.
- Charles Darwin, The Voyage of the Beagle p. 139. Retrieved August 1, 2011
- Bridges, E L (1948) The Uttermost Part of the Earth Republished 2008, Overlook Press ISBN 978-1-58567-956-0
- Julia Voss, "Jim Knopf rettet die Evolutionstheorie" Frankfurter Allgemeine Zeitung (December 16, 2008). Retrieved July 31, 2011 (in German)
- Martin Wittmann, "Nazis raus aus Lummerland" Fokus magazine (August 9, 2010). Retrieved July 31, 2011 (in German)
- Jemmy Button: el niño yagán raptado por los ingleses llega al Teatro UC.