As of 2020, members of Clan MacEwen Society, UK have agreed to elect a Commander, Sir John Roderick Hugh McEwen, 5th Baronet (born 1965), of Marchmont and Bardrochat, who is proposed as the first Chief to potentially be recognized by the Lord Lyon since the death of Swene MacEwen.

[1] According to tradition, these McEwens fought alongside the Sheriff of Wigtown's clan, the Agnews of Lochnaw, against the Black Douglas in a feud over the Sheriffdom of Galloway in the middle of the fifteenth century.

[11] MacEwens in the area of Perthshire and Loch Tay were therefore considered to be a part of Clan MacDougall.

[14] Their use of the rare personal name Athairne suggests that they were a branch of the Irish O'Hosey (Ó hEoghusa) bardic family.

[8][9] It is frequently stated that an Act of Parliament of 1602 lists MacEwens beside MacLachlans and McNeils, as vassals of the Earl of Argyll and answerable to him for their behaviour.

[17] According to the 19th-century historian James Logan, in General Wade's statement of the Highland forces engaged in the Jacobite rising of 1715, the MacEwens of the Isle of Skye were recorded to have summoned 150 men.

[1] It is from this line that Sir John Roderick Hugh McEwen, 5th Baronet (born 1965), who has been nominated as Commander by the UK clan society, descends.

The banner accompanying the image bears the Latin motto REVIRESCO ("I grow green / verdant / strong again").

[20] This crest badge is not derived from the arms of a previous chief of the clan,[1] but appears to have been in use among the Galloway McEwens from an early date.

[23] On 27 February 2012, the Lord Lyon announced his intention to appoint a Supervising Officer to oversee a future Family Convention or Derbhfine "for those of the [MacEwen] name, broadly defined .

"[24] On 11 October 2012, the Lord Lyon announced the appointment of the Honourable Adam Bruce, Marchmont Herald of Arms, as Supervising Officer for the Family Convention.