The place-name first appears in *Widsith*, an Old English poem written down in the sixth or seventh century — which is to say the earliest surviving record of the name is in English, not in any continental source. Its roots have been traced to Germanic *angulaz*, "hook," and *angw-*, "narrow," and one reading is that the word first described the Schlei — the long narrow inlet forming the peninsula's southern edge — before it described the people beside it. How much ground the ancient Angeln covered is genuinely unknown — it may have matched the region the name marks today, or been considerably larger. The careful phrasing is the honest one: Angeln is the *putative* home of the Angles.

Something did happen here, and the ground records it. In the fifth and sixth centuries settlement density dropped sharply and villages fell into disrepair. Grain pollen declines steeply in the cores — fields stopped being worked. The heavy clay sites were abandoned first, while pollen counts held up better on the sandy Schleswig Geest to the west — a pattern that fits a wetter climate pushing farmers onto lighter soils. Raiding from the sea may have emptied the coastal settlements. The departure was probably no single exodus but a slow drift: current thinking allows up to a hundred years between the end of Anglian settlement here and the Angles' arrival in eastern and central England, with a move west onto the Geest in between.

The written version is tidier and much later. The *Anglo-Saxon Chronicle*, compiled around 890 under Alfred the Great from oral tradition and scraps of earlier text, dates the events to 449–455: a British king named Vortigern invites the Angles to take land in exchange for helping him fight off Pictish raiders. The Angles who came sent word home that the land was good and the British were, in the Chronicle's blunt assessment, worthless, after which whole communities followed. Bede, writing around 730, fixed the distribution: Angles north of the Humber in what became Northumbria, in Mercia across the Midlands, and in East Anglia. Archaeology backs the outline — cruciform brooches of the type fashionable along the coasts of Denmark, Schleswig-Holstein and the lower Elbe turn up across eastern and northern Britain.

The landscape they left is glacial through and through. Angeln is one of four peninsulas along Schleswig-Holstein's Baltic coast, all part of the morainic uplands the Weichselian glaciation pushed up — hilly, wooded, freckled with meltwater lakes. A ridge of hills between Husby and Kappeln is the watershed of the whole region: streams east of it run a few kilometres to the Baltic, while streams west of it feed the Treene, which rises here, joins the Eider and reaches the North Sea at Tönning. Since the Eider was for centuries the border between the Danish and German realms, the divide carries a second meaning. The northern tip, the Holnis peninsula, pushes into the Flensburg Firth with a cliff coast, and just southwest of Angeln the Danevirke rampart and the Viking town of Hedeby form a UNESCO World Heritage Site.

Few regions have changed language so completely, so often. The Angles spoke a West Germanic dialect ancestral to English. After they left, Danes moved in from the eighth century, and Danish was the everyday language for roughly a thousand years — the local variety, Angel Danish, a dialect of South Jutlandic once spoken as far south as Eckernförde. In the nineteenth century the region flipped again, to West Germanic Low German, since largely displaced by a Standard German carrying Low German colouring. Danish is still spoken by a minority, particularly in Flensburg, Schleswig and Glücksburg, but it is Southern Schleswig Danish — a German-influenced form of standard Danish, not a survival of the old dialect. What the Danish millennium left behind is the map. Villages ending in *-by*, "town" — Brodersby, Nieby, Husby — and *-rup*, "hamlet" — Sörup, Sterup, Tastrup — are Danish names in a German-speaking country, and there are hundreds of them.

Two European dynasties took their names from buildings here. Glücksburg Castle, a white water-castle on the Flensburg Firth, named the House of Glücksburg, which still supplies the monarchs of Denmark and Norway; Gottorf Castle at Schleswig was the seat of the House of Holstein-Gottorp. Angeln lent its name to livestock too — the red Angler cattle and the Angler saddleback pig are regional breeds. The Angelner Dampfeisenbahn still runs museum steam trains between Süderbrarup and Kappeln, which is one way to cross a landscape that has otherwise been quietly getting on with things for fifteen hundred years.