How did Cornwall get its name?

Answer 1

The name Cornwall was imposed on it by the invading Germanic tribes and is a Cornish/Anglo-Saxon hybrid name, derived from the Cornish 'corn' and the Anglo-Saxon 'wealas', meaning 'the foreigners of the horn' - Cornwall being a horn shaped peninsula (rather like Italy but smaller).

The ancient and native name for Cornwall in the Cornish language is Kernow, meaning '(land of) horns'. This can either be a reference to its many headlands or to its many inlets (or indeed both!).

Thus Cornwall has a name imposed on it by the people who later became the English, as well the name originated by the native Cornish people.