Question: What is the name of the Welsh language speaking colony in the far southern region of Patagonia?

Context paragraphs:
Tafod y Ddraig: Tafod y Ddraig (which translates as "The Dragon's Tongue", ] ), or Tafod, was a monthly Welsh language magazine dedicated to the promotion and preservation of the Welsh language.  This magazine was the only voice of Cymdeithas yr Iaith Gymraeg (the Welsh Language Society) from its foundation in October 1963 by Owain Owain.  It is still published today by the Society under the title "Tafod" ("Tongue"), approximately quarterly to coincide with events such as the National Eisteddfod.

Simon Brooks: Dr Simon Brooks (born 1971) is a Welsh academic and writer.  He is a former editor of the Welsh language current affairs magazine "Barn" (1996–2007), as well as founding co-editor of the Welsh language cultural magazine "Tu Chwith" between 1993 and 1996.  A collection of his journalism in "Barn" was published in 2009.  He is also a founding member of the Welsh language pressure group Cymuned, for whom he was a prominent media spokesman between 2001 and 2004, and whose central office he ran.  He was a lecturer at the School of Welsh, Cardiff University.

Y Fro Gymraeg: Y Fro Gymraeg (literally 'The Welsh Language Area', pronounced ] ) is a name often used to refer to the linguistic area in Wales where the Welsh language is used by the majority or a large part of the population; it is the heartland of the Welsh language and comparable in that respect to the Gàidhealtachd of Scotland and Gaeltacht of Ireland.  However, unlike its equivalent in Ireland, Y Fro Gymraeg does not have official government recognition.

Y Wladfa: Y Wladfa (] , "The Colony"), also occasionally Y Wladychfa Gymreig, is a Welsh settlement in Argentina, which began in 1865 and occurred mainly along the coast of Chubut Province in the far southern region of Patagonia.

Welsh language: Welsh ("Cymraeg " or "y Gymraeg ," pronounced ] ) is a member of the Brittonic branch of the Celtic languages.  It is spoken natively in Wales, by some in England, and in "Y Wladfa" (the Welsh colony in Chubut Province, Argentina).  Historically, it has also been known in English as "Cambrian", "Cambric" and "Cymric".

Abercastle: Abercastle (Welsh: Abercastell ) is a village in the Welsh language speaking area of Pembrokeshire, south-west Wales.  Abercastle has a working harbour which is managed by Abercastle Boat Owners Association.  The harbour was the landing site of the first single handed atlantic sailing west to east in 1876 starting from Gloucester, Massachusetts, by the Danish born fisherman, Alfred "Centennial" Johnson.

Addysgydd: Addysgydd was a monthly Welsh language periodical published by J. Evans in Carmarthen, Wales during 1823.  The periodical is an early example of a Welsh language children's periodical.  It was aimed at the children and young people of the Sunday school in Carmarthen.  The magazine was edited by the minister and hymn writer David Charles (1803-1880), and contains a number of his hymns.  The subject matter of the Journal was largely concerned with religious education.  It is thought to be the first Welsh language publication for children to contain illustrations of events from the Old Testament and the New Testament.

Welsh people: The Welsh (Welsh: "Cymry" ) are a nation and ethnic group native to, or otherwise associated with, Wales and the Welsh language.  The language, which falls within the Insular Celtic family, has historically been spoken throughout Wales, with its predecessor Common Brittonic once spoken throughout most of the island of Great Britain.  Prior to the 20th century, large numbers of Welsh people spoke only Welsh, with little or no fluent knowledge of English.  While Welsh remains the predominant language in some areas of Wales, particularly in the north and the west, English is now the predominant language in most parts of the country; however, many Welsh people, even in predominately English-speaking areas of Wales, are fluent or semi-fluent in Welsh or, to varying degrees, capable of speaking or understanding Welsh at limited or conversational proficiency levels.

Welsh Tract: The Welsh Tract, also called the Welsh Barony, was a portion of the U.S. state of Pennsylvania settled largely by Welsh-speaking Quakers.  It is located to the west of Philadelphia.  The original settlers, led by John Roberts, negotiated with William Penn in 1684 to constitute the Tract as a separate county whose local government would use the Welsh language.  The Barony was never formally created, but the many Welsh settlers gave their communities Welsh names that survive today.  A more successful attempt at setting up a Gwladfa (Welsh-speaking colony) occurred two centuries later, in the Chubut Province of Patagonia, Argentina.

London Welsh School: The London Welsh School (Ysgol Gymraeg Llundain) is a Welsh medium primary school in London, England.  The Welsh language is the language of instruction for all classes and activities.  The London Welsh School's origins date back to language classes taught in 1955, and a dedicated school set up some two years later.  Its official name is The Welsh School, London.  For much of its history the school was the only Welsh medium institution located outside Wales until the opening of a Welsh language school in Patagonia, Argentina.  That institution, the Ysgol yr Hendre, was opened on 6 March 2006 in Trelew to serve the Welsh-Argentine community.

Supporting paragraphs: Welsh language Y Wladfa
Answer: Y Wladfa