Background: The Bretons (Breton: Bretoned, Breton pronunciation: [bre'tonet]) are an ethnic group located in the region of Brittany in France. They trace much of their heritage to groups of Brittonic speakers who immigrated from southwestern Great Britain, particularly Cornwall and Devon, to expand their territory onto the continent. They also descend in some parts from Vikings. They migrated in waves from the 3rd to 9th century (most heavily from 450-600) into Armorica, which was subsequently named Brittany after them.
Context: In the late 4th century, large numbers of British auxiliary troops in the Roman army may have been stationed in Armorica. The 9th-century Historia Brittonum states that the emperor Magnus Maximus, who withdrew Roman forces from Britain, settled his troops in the province. Nennius and Gildas mention a second wave of Britons settling in Armorica in the following century to escape the invading Anglo-Saxons and Scoti. Modern archaeology also supports a two-wave migration.  It is generally accepted that the Brittonic speakers who arrived gave the region its current name as well as the Breton language, Brezhoneg, a sister language to Welsh and Cornish.  There are numerous records of Celtic Christian missionaries migrating from Britain during the second wave of Breton colonisation, especially the legendary seven founder-saints of Brittany as well as Gildas. As in Cornwall, many Breton towns are named after these early saints. The Irish saint Columbanus was also active in Brittany and is commemorated accordingly at Saint-Columban in Carnac.  In the Early Middle Ages, Brittany was divided into three kingdoms -- Domnonee, Cornouaille (Kernev), and Bro Waroc'h (Broerec) -- which eventually were incorporated into the Duchy of Brittany. The first two kingdoms seem to derive their names from the homelands of the migrating tribes in Britain, Cornwall (Kernow) and Devon (Dumnonia). Bro Waroc'h ("land of Waroch", now Bro Gwened) derives from the name of one of the first known Breton rulers, who dominated the region of Vannes (Gwened). The rulers of Domnonee, such as Conomor, sought to expand their territory, claiming overlordship over all Bretons, though there was constant tension between local lords.  Bretons were the most prominent of the non-Norman forces in the Norman conquest of England. A number of Breton families were of the highest rank in the new society and were tied to the Normans by marriage. The Scottish Clan Stewart and the royal House of Stuart have Breton origins. Alan Rufus, also known as Alan the Red, was both a cousin and knight in the retinue of William the Conqueror. Following his service at Hastings, he was rewarded with large estates in Yorkshire. At the time of his death, he was by far the richest noble in England. His manorial holding at Richmond ensured a Breton presence in northern England. The Earldom of Richmond later became an appanage of the Dukes of Brittany. CANNOTANSWER
Question: what is reason to believe this?. Whats the answer?
The 9th-century Historia Brittonum states that the emperor Magnus Maximus, who withdrew Roman forces from Britain, settled his troops in the province.
Bakgrund: Bretonerna (bretonska: Bretoned, bretonskt uttal: [bre'tonet]) är en etnisk grupp belägen i regionen Bretagne i Frankrike. De spårar en stor del av sitt arv till grupper av Brittoniska talare som invandrade från sydvästra Storbritannien, särskilt Cornwall och Devon, för att utvidga sitt territorium till kontinenten. De härstammar också i vissa delar från vikingar. De migrerade i vågor från 3:e till 9:e århundradet (störst från 450-600) till Armorica, som sedermera fick namnet Bretagne efter sig. Sammanhang: I slutet av 400 - talet kan ett stort antal brittiska hjälptrupper i den romerska armén ha varit stationerade i Armorica. I 9-talshistorien Brittonum anges att kejsaren Magnus Maximus, som drog tillbaka romerska styrkor från Storbritannien, bosatte sina trupper i provinsen. Nennius och Gildas nämner en andra våg av britter som bosatte sig i Armorica under det följande århundradet för att undkomma de invaderande anglosaxarna och skotti. Modern arkeologi stöder också en tvåvågig migration. Det är allmänt accepterat att de Brittoniska talare som anlände gav regionen dess nuvarande namn samt det bretonska språket, Brezhoneg, ett systerspråk till walesiska och korniska. Det finns talrika uppteckningar om keltiska kristna missionärer som migrerade från Storbritannien under den andra vågen av bretonsk kolonisering, särskilt de legendariska sju grundarna-helgon av Bretagne samt Gildas. Liksom i Cornwall är många bretonska städer uppkallade efter dessa tidiga helgon. Det irländska helgonet Columbanus var också verksam i Bretagne och firas därmed på Saint-Columban i Carnac. Under tidig medeltid delades Bretagne upp i tre riken - Domnonee, Cornouaille (Kernev), och Bro Waroc'h (Broerec) - som så småningom införlivades med Hertigdömet Bretagne. De två första kungadömena tycks härstamma från de migrerande stammarnas hemländer i Storbritannien, Cornwall (Kernow) och Devon (Dumnonia). Bro Waroc'h ("landet Waroch", numera Bro Gwened) härstammar från namnet på en av de första kända bretonska härskarna, som dominerade regionen Vannes (Gwened). Domnoneehärskarna, som Conomor, sökte utvidga sitt territorium och hävdade överherrskap över alla bretoner, även om det rådde ständig spänning mellan lokala stormän. Bretonerna var den mest framträdande av de icke-norska styrkorna vid den normandiska erövringen av England. Ett antal bretonska familjer var av högsta rang i det nya samhället och knöts till normanderna genom giftermål. Den skotska klanen Stewart och kungahuset Stuart har bretonskt ursprung. Alan Rufus, även känd som Alan den röde, var både kusin och riddare i Vilhelm Erövrarens följe. Efter sin tjänstgöring på Hastings belönades han med stora gods i Yorkshire. Vid sin död var han den i särklass rikaste adelsmannen i England. Hans godsinnehav i Richmond säkerställde en bretonsk närvaro i norra England. Earldömet Richmond blev senare ett appanage för hertigarna av Bretagne. CANNOTANSWER Fråga: vad är anledning att tro på detta?. Vad är svaret?
Background: The Bretons (Breton: Bretoned, Breton pronunciation: [bre'tonet]) are an ethnic group located in the Brittany region of France. They trace much of their heritage to groups of Brittonic speakers who immigrated from southwestern Britain, especially Cornwall and Devon, to extend their territory to the continent. They also originate in some parts from Vikings. They migrated in waves from the 3rd to 9th centuries (largest from 450-600) to Armorica, which was subsequently named Brittany after them. Context: By the end of the fifth century, a large number of British auxiliaries in the Roman army may have been stationed in Armorica. In the 9th-century history of Brittonum, it is stated that the Emperor Magnus Maximus, who withdrew Roman forces from Britain, settled his troops in the province. Nennius and Gildas mention a second wave of Britons who settled in Armorica in the following century to escape the invading Anglo-Saxons and Scots. Modern archaeology also supports a two-wave migration. It is generally accepted that the Brittonic speakers who arrived gave the region its current name as well as the Breton language, Brezhoneg, a sister language of Welsh and Cornish. There are numerous records of Celtic Christian missionaries migrating from Britain during the second wave of Breton colonization, particularly the legendary seven founders-saints of Brittany as well as Gildas. As in Cornwall, many Breton cities are named after these early saints. The Irish saint Columbanus was also active in Brittany and is thus celebrated at Saint-Columban, Carnac. In the early Middle Ages, Brittany was divided into three kingdoms - Domnonee, Cornouaille (Kernev), and Bro Waroc'h (Broerec) - which were eventually incorporated into the Duchy of Brittany. The first two kingdoms appear to originate from the homelands of the migrant tribes of Britain, Cornwall (Kernow) and Devon (Dumnonia). Bro Waroc'h ("the Land of Waroch", now Bro Gwened) derives from the name of one of the first known Breton rulers, who dominated the Vannes (Gwened) region. The Domnonee rulers, such as Conomor, sought to expand their territory and claimed overlordship over all the brethons, although there was constant tension between local lords. The Bretons were the most prominent of the non-Norwegian forces at the Norman conquest of England. A number of Breton families were of the highest rank in the new society and were linked to the Normans by marriage. The Scottish clan of Stewart and the Royal House of Stuart have Breton origins. Alan Rufus, also known as Alan the Red, was both a cousin and a knight in William the Conqueror's entourage. After his service at Hastings, he was rewarded with large estates in Yorkshire. At the time of his death, he was by far the richest nobleman in England. His estate holdings in Richmond ensured a Breton presence in northern England. The Earldom of Richmond later became an appanage for the Dukes of Brittany. CANNOTANSWER Question: what is reason to believe in this?. What's the answer?
I 9-talshistorien Brittonum anges att kejsaren Magnus Maximus, som drog tillbaka romerska styrkor från Storbritannien, bosatte sina trupper i provinsen.
In the 9th-century history of Brittonum, it is stated that the Emperor Magnus Maximus, who withdrew Roman forces from Britain, settled his troops in the province.