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".
Gallaecian language
Gallaecian, or Northwestern Hispano-Celtic, is an extinct Celtic language and was one of the Hispano-Celtic languages. It was spoken at the beginning of the 1st millennium in the northwest corner of the Iberian Peninsula that became the Roman province of Gallaecia and is now divided between the modern regions of Galicia, Norte Region, Portugal, western Asturias, and the Province of León, in Spain.