Abbots and lords of Abernethy

The abbots of Abernethy were descendants of Gille Míchéil, Earl of Fife. The abbacy may have been held by Áed (called Hugo or Eggu and other Latinised forms), son of Gille Míchéil,[2] but the abbacy is first attested when Áed's son Orm is confirmed in possession of it by King William of Scotland in the 1170s, in condition for making concessions favorable to the King's new monastic establishment at Arbroath Abbey.[3] The title of Abbot disappears in the sources during the abbacy of Laurence, with the title of dominus predominating:

• Orm de Abernethy (fl. 1170s)
• Laurence de Abernethy (fl. 1190s)
• Hugh de Abernethy (d. 1291)
• Alexander de Abernethy (d. c. 1315)

Following the death of Alexander Abernethy, the title passed to his daughter Margaret who married John Stewart of Bonkyll, who assumed the title, as well as being granted the forfeited Earldom of Angus. https://en.wikipedia.org/wiki/Lord_of_Abernethy

http://www.genealogy4u.com/genealogy/getperson.php?personID=I11025&...

Margaret was daughter of Alexander, Earl of Menteith.[1]

Her issue by Sir Alexander de Abernethy includes two daughters:

Margaret de Abernethy, wife of Sir John Stewart, Earl of Angus; and Mary de Abernethy, wife of (1) Sir Andrew de Leslie and (2) Sir David de Lindsay.