Eoin Dubh mac Alasdair (Anglicised: John the Black, son of Alexander) was a son of Ranald mac Alasdair, and was a chief of Clan MacAlister.
Eoin Dubh created his seat at Ardpatrick, South Knapdale. He was succeeded upon his death by his son Charles, who had been appoointed in 1483 Steward of Kintyre.
References
Eoin Dubh mac Alasdair Wikipedia(Text) CC BY-SA