Alpín mac Echdach was a supposed king of Dál Riata, an ancient kingdom that included parts of Ireland and Scotland.
Alpín was included in a pedigree chart created in the 10th century to connect the kings of Alba (Scotland) to legendary Dál Riatan and Irish ancestors.
Cináed and Alpín are the names of Pictish kings in the 8th century: the brothers Ciniod and Elphin who ruled from 763 to 780.
[1] The Chronicle of the Scottish historian John of Fordun records the succession of "Alpin the son of Achay" in 831, his reign of three years, and his defeat by the Picts "20 July".
It is said that Alpín's head was fastened to a pole, and carried about the Pictish army, and at last set up for spectacle in Abernethy, their chief town, which was afterwards severely revenged by the Scots, who called the place where he was slain Bas Alpin.