The Union of the Crowns was the accession of James VI of Scotland to the throne of the Kingdom of England as James I and the practical unification of some functions of the two separate realms under a single individual on 24 March 1603. It followed the death of James's cousin, Elizabeth I of England, the last monarch of the Tudor dynasty.

Scots is an Anglic language variety in the West Germanic language family, spoken in Scotland and parts of Ulster in the north of Ireland. Most commonly spoken in the Scottish Lowlands, Northern Isles, and northern Ulster, it is sometimes called Lowland Scots to distinguish it from Scottish Gaelic, the Goidelic Celtic language that was historically restricted to most of the Scottish Highlands, the Hebrides, and Galloway after the sixteenth century; or Broad Scots to distinguish it from Scottish Standard English. Modern Scots is a sister language of Modern English, as the two diverged independently from the same source: Early Middle English (1100–1300).