Galwegian Gaelic
George Buchanan, himself a Gaelic speaker, writing in 1575, reported that Gaelic was still spoken in Galloway. In the middle of the century, 1563–1566, an anonymous English military investigator reported that the people of Carrick "for the most part specke erishe".
British Iron Age
The tribes living in Britain during this time are often popularly considered to be part of a broadly Celtic culture, but in recent years this has been disputed. At a minimum, "Celtic" is a linguistic term without an implication of a lasting cultural unity connecting Gaul with the British Isles throughout the Iron Age. The Brythonic languages spoken in Britain at this time, as well as others including the Goidelic and Gaulish languages of neighbouring Ireland and Gaul respectively, certainly belong to the group known as Celtic languages. However it cannot be assumed that particular cultural features found in one Celtic-speaking culture can be extrapolated to the others.