The Christianisation of southern Scotland, if Patrick's letter to Coroticus was indeed to a king in Strathclyde, had therefore made considerable progress when the first historical sources appear.
A cristianización de la Escocia meridional, se a carta de San Patricio a Coroticus foi realmente a un rei en Strathclyde, fixera un considerábel progreso cando aparecen as primeira fontes históricas.