Yet another note going back a lttle bit farther: the earliest extant map of the area is the so-called Ptolemy Map of AD 130 or so. A few tribes are listed on it. The one in Kintyre is Epidii. Kintyre itself is Epidion Akron - direct translation of the ancient name Aird Echde. This is before the Gaels (Q-Celts) invaded Alba; so they ( the Epidii) are P-Celts (Picti, Caledonii, Cruithne...) or possibly at that stage still speakers of a pre-Celtic language uninfluenced by the Cuimrich. It can only be speculation that the reference to the horse in surname of one of the leading families of 17th century Kintyre derives from tribe there at the 2nd century AD.