the romans conquered most of the island (up to hadrian's wall in northern england) and this became the ancient roman province of "britannia". in the course of the 500 years after the roman empire fell, the britons of the south and east of the island were assimilated or displaced by invading germanic tribes (angles, saxons, and jutes, often referred to collectively as anglo-saxons). at about the same time, gaelic tribes from ireland invaded the north-west, absorbing both the picts and britons of northern britain, eventually forming the kingdom of scotland in the 9th century. the south-east of scotland was colonised by the angles and formed, until 1018, a part of the kingdom of northumbria. ultimately, the population of south-east britain came to be referred to as the english people, so-named after the angles.