The Timeline
(an actual timeline)
* denotes changes from OTL (explanations in parentheses)

c1807 Britain successfully invades & captures Chiloé from Spain* (OTL Britain unsuccessfully invaded Montevideo)

Chiloé's trade booms as it is opened to British commerce

1808 local junta begins rule the Captaincy-General of Chile due to the invasion of Spain by France the previous year

1809/1810 Valparaíso is opened to trade as a free port, enticed by the success of Chiloé* (OTL 1811 as Chiloé wasn't able to lead by example)

1810 war of independence begins in La Plata

1811 Spain withdraws all troops and settlers from Las Malvinas to Buenos Aires

1814 Spanish officials and troops return to Chile, closing Valparaíso to trade outside the Spanish Empire; Chilean junta revolts against Spanish rule

1814-1817 Chilean war of independence

1817 Spanish troops retreat from Chile to Valdivia* (IOTL to both Valdivia and Chiloé)

1817-1825 Latín American wars of Independence continue

1825 Battle of Ayacucho; last time Spanish soldiers on continent of America in official capacity

1826* (IOTL Chiloé was retaken from Spain by Chile; it was considered naturally part of Chile due to Chilean manifest destiny (despite being part of the Viceroyalty of Peru during colonial times) and was historically very Royalist. Chiloé was also considered necessary to take to prevent Spain from having a foothold in the Americas; it was believed the British navy would prevent the Spanish from coming back. In this light, even though they want to, the Chileans avoid fighting to take back Chiloé, which in any event has been in British hands for almost twenty years.)

1826-1833 first and second voyages of the HMS Beagle

1826-1832 attempted & failed settlement of the Falklands by Argentina; during this time the British Colonial office discuss colonizing the Falklands & decide to do it* (IOTL they agree to taking possession but delay the decision to make it a colony for several years)

1833 during the Beagle's second voyage, an Anglican mission is successfully established on Tierra del Fuego due to assistance from converted Chilotes* (IOTL the mission failed)

British reoccupy the Falkland Islands, it becomes and important coaling and whaling station and is declared a Crown Colony* (IOTL it is reoccupied but not declared a colony until 1840)

1830s Robert FitzRoy (Captain of the Beagle) petitions to create a settlement at Sandy Point (Punta Arenas), on the strait of Magellan

1837 French expedition through the Strait of Magellan

1838 FitzRoy is authorized to create a settlement at Sandy Point to assist ships traversing the Strait of Magellan* (IOTL, Chile colonizes the region, mainly with Chilotes, from 1843-1848 when they establish a penal colony)

1840 FitzRoy is made Governor of the Magellan Straits Colony; the Anglican mission at Tierra del Fuego is attached, but the Falklands and Chiloé remain distinct

1850s - Many German settlers arrive at Llanquihe province (the Chilean mainland directly north of Chiloé). ITTL many Protestant Germans re-emigrate to Chiloé or Palena (Chilean mainland directly east of Chiloé)

c1850 trading post established on the Santa Cruz river at OTL Isla Pavón (named Middle Island by FitzRoy during the second Beagle Voyage). After the establishment of the trading post, it is renamed FitzRoy Island* (IOTL this trading post was established in 1860 by the Argentinians)

c1859 Anglican mission established among the Yaghan at Ushwaia* (IOTL this is established in 1869)

1860s Argentinian "Conquest of the desert" begins a few years earlier in an attempt to keep the British as far south as possible

Lewis-Jones and Parry discuss colonising the Chubut River Valley with Argentine Foreign Secretary Guillermo Rawson, who at first agrees but then relents, afraid that it would be used by Britain to expand control in the southern cone. Lewis-Jones and Parry then present their plan to the British colonial office, which agrees to put the colony under the military protection of the Magellan Straits Colony, as long as the Welsh settlement is entirely self-funded.

1865 - the ship Mimosa arrives the OTL Valdès Peninsula, ITTL renamed New Anglesey/ Mon Newydd* [thanks to Analytical Engine]. It brings around 250 Welsh settlers. The Chubut is called the Camwy by the settlers

1860s & 1870s - Britain establish several settlements in OTL Santa Cruz province, Argentina. Puerto Santa Cruz ITTL is named Southern Cross, Rio Gallegos maybe New Galloway. Port St Julian and Port Desire retain their English names* (These settlements are established earlier than OTL, and by England rather than Argentina)

1876 - Henry Reynard, of Sandy Point, purchases 300 sheep from the Falkland Islands, which he begins to raise in the vicinity of Sandy Point.

This is the beginning of the Patagonian sheep boom

1881 - a tripartite treaty establishes the boundaries between Chile, Argentina, and the UK colonies.

The boundary on the continent is the 42nd parallel south, with all of the island of Chiloé being included

1883 - Gold is discovered near Sandy Point, gold rush ensues

1885 - there are now over 40,000 sheep in the southern tip of South America

1880s - railroads are built from Port Madryn to Sandy Point via Tre Lew and from Tre Lew to Chaitén (ITTL Chayton)

From 1890s Aysen/Coyhaique area settled from east

1900s during discussions on (Con?) Federation, new capital is established at FitzRoy (OTL Comodoro Rivadavia) as equidistant from Chayton/Chiloé and Sandy Point; Sandy Point renamed Magellan

Railway built from OTL Puerto Aysen to OTL Comodoro Rivadavia (TTL Cochrane to FitzRoy?)

c1902-1930 (Con?) Federation is complete minus likely the Falkland Islands. Commonwealth of Patagonia (pronounced Pat-a-gone-ya, rather than with a long ó as in Spanish). Structure adopted has a strong central government and weak regional governments.

1906 - there are over 2,000,000 sheep in Patagonia. Nearly half the land of the Magellan region is owned by sheep ranchers.

1914 - population is around 315,000; 200,000 in "Chilloway"

1947 - population is almost 600,000 just over 200,000 in Chilloway.

"Chilloway" transforms from maybe 20,000 Chilote Mestizos in 1807 to c30,000 and 10% European 1845; 155,000 and 40% European in 1907; population temporarily peaks at 225,000 (50% European in 1920); many Chilotes begin migrating to Aysen and Magellan regions after 1920; population decreases to 180,000 (60% European) in 1940. Population reaches 245,000 by 1960, still roughly 60% European, but another large movement occurs during the 1960s and the population declines to roughly 220,000 by 1970; almost 67% European

Post WWII - Maybe a Social Credit government?; BC and NZ seem like decent analogues and both of them had prominent SoCred parties; so who knows

1970s - UK attempts to transfer authority of Falkland Islands (but not South Georgia & South Sandwich Islands) to Patagonia; Patagonians fear Argentinian and/or Chilean invasion if British leave the South Atlantic

1982 - Falklands war?

Modern population c 3,250,000 (roughly twice the population of the area OTL)

65% or so European; mainly British but also large Italian, Spanish, German, Slavic, Portuguese and Afrikaner populations

15% or so Mestizos including immigrants from Latin America

4% African
3% Arab & west Asian
5% South Asian
6% E & SE Asian
2% Indigenous (Kawesqar, Tehuelche, Yaghan, Sel'knam, Cunco)

Major metropolitan areas:

FitzRoy-St George's (700,000)
Port Madryn-TreLew (500,000)
Magellan (250,000)
New Galloway (200,000)
Darwin (OTL Río Grande) (200,000)
Oshowia (200,000)
Castro (150,000)
Coyhaique-Aysen (150,000) (name?)
 
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The Patagonian Accent
Based on readings on other Southern Hemisphere British dialects, I propose that, like in Australia or South Africa, a "trichotomy" of accents develop: 'Conservative'; 'General' and 'Broad'

The Conservative accent differs little from Received Pronunciation in the UK, is typical of the "elite" classes and is often affected

The "General" accent is the most common English-language accent of the country, and has is likely somewhat between General NZ English and Genera South African English - or, not entirely unlike Falklands English. The accent is associated with the middle classes and is the most common representation in media

The "Broad" accent is associated with Patagonia's working classes, and as such, its grammar, accent, and vocabulary are heavily influenced by both General Patagonian English, but also Rioplatense and Chilean Spanish. It is often used as a "stereotypical" Patagonian accent in foreign (especially non-Anglosphere) media, a fact which is widely resented by more "genteel" Patagonians
 
Was there any military conflict between Britain, Argentina and possibly Chile regarding British Patagonia?
Hey thanks for the question!

I don't think there would be any large-scale conflict during the settlement phase, primarily because of how economically dependent both Chile and Argentina are on British trade at this point, but also because of overwhelming British power at this point and the lack of interest in the region OTL - in 1895, OTL, the total European settler population of the region (Chubut, Santa Cruz, Tierra del Fuego, Aysén, Magallanes) was less than 10,000; the majority of these were British.

ITTL the numbers will be greater, but also more British.

Another factor is the necessity of having British help when Argentina and Chile go to war against their other neighbours.

That being said, there are a few periods where I think conflict is more likely:

1) the conquest of the desert period/immediately before the treaty. As Argentina is expanding southward, growing in wealth and population, it make begin to like its odds against Britain. War could erupt if the British Patagonians try to move north of the 42nd and toward Newken and the Rio Negro.

2) WWII era. If Argentina is governed by a dictatorship that is enamored with fascism, they may try to take Patagonia or parts of it

3) like OTL (of course butterflies abound), after the decolonisation process in the West, if Argentina and/or Chile are under military dictatorships, especially of the far-right variety, they may well launch an attack designed to bolster their regime (like the Falklands war)

So, somewhat ironically, I don't actually think war over Patagonia would come until later.

As for skirmishes, fights between settlers and settlement parties and tensions over Patagonia and the border? Yeah, constantly, until the Treaty in 1881 (or whenever)!
 
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1865 - the ship Mimosa arrives the OTL Valdès Peninsula, ITTL renamed New Anglesey/ Ynys Mon Nua. It brings around 250 Welsh settlers. The Chubut is called the Camwy by the settlers
I'm sorry, but that Welsh is wrong

It should be Môn Newydd - there's no point calling it an island, since it, well, isn't one
 
I'm sorry, but that Welsh is wrong

It should be Môn Newydd - there's no point calling it an island, since it, well, isn't one
Thank you very much for the correction and observation! What about Penrhyn Llyn Newydd?

I'm thinking the region as a whole will be called New North Wales (initial/official), but Gwynedd Newydd by the settlers? Assuming they don't, y'know, just call it Y Wladfa Cymraeg
 
Thank you very much for the correction and observation! What about Penrhyn Llyn Newydd?

I'm thinking the region as a whole will be called New North Wales (initial/official), but Gwynedd Newydd by the settlers? Assuming they don't, y'know, just call it Y Wladfa Cymraeg
Given there are a lot of seals and sea lions living there, I would suggest something like the Seal Peninsula / Pen Morloi (morlo being the singular form of seal)
 
Given there are a lot of seals and sea lions living there, I would suggest something like the Seal Peninsula / Pen Morloi (morlo being the singular form of seal)
In a round about sort of way, this has just inspired me for the Patagonian national Rugby teams name: the Penguins. It makes a lot of sense - they are found all across the area and the roots of the word are Welsh
 
Is there a movement, (however small), to unite the British presence in the Americas? Like Canada + Patagonia + Guyana + Antilles?
I'm not sure if there would be much desire for a political union of the American Commonwealth countries that is distinct from the CANZUK or Imperial Federation movement; but there would almost certainly be a much closer economic/trading relationship between Canada and Patagonia.

Patagonia has lots of cultural similarities with, especially, BC and NZ, but their closest Commonwealth neighbour is South Africa!
 
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