Eva de Levenax, Countess of Killsyth

From The Scots Peerage: Founded on Wood's Edition of Sir Robert Douglas's Peerage of Scotland; Containing an Historical and Genealogical Account of the Nobility of that Kingdom, Volume 5 (Google eBook) James Balfour Paul D. Douglas, 1908 - Nobility.  "LIVINGSTON, VISCOUNT KILSYTH pp. 185-186:

THE lands of Kilsyth (Kelnasydhe in the oldest charter) appear to have formed part of the ancient earldom of Lennox. A carucate and a half of these lands, together with the patronage of the church of Moniabrochd formed part of the dowry of Eva, sister of Maldouen, Earl of Lennox, on her marriage to Malcolm, son of Duncan,1 but there is no evidence that it was erected into a barony at that period.
Through Alwin, Thane of Callendar, son of Eva, this part of Kilsyth was inherited by the family of Callendar (anciently Kalentyr or Calentar), but was forfeited by Sir Patrick Callendar owing to his adherence to the cause of Baliol.
Pages 330-331: "11. Eva, to whom, in or about 1217, Earl Maldouen granted the lands of Glaskel or Glaswel in free marriage with Malcolm, son of Duncan, than of Callendar. (The Lennox Book, II. 402) On 10 August in that year the Earl renewed the grant to her and her husband, and added part of Kilsyth, with the patronage of the church, then styled Moniabroc. (The Lennox Book, II. 402) They had issue: Alwin, Thane of Callendar, ancestor of the family of that name."

Source: Van Rensselaer, F. (1949) The Livingston Family in America and Its Scottish Origins. New : William Byrd Press. Available at: Archive.org, p. 7.
Descent of Christian de Callendar from the Ancient Celtic Earls of Lennox and Menteith
I. Alwin, first Earl of Lennox died circa 1199; married ——— name of wife unknown.
— His chief was at Balloch.
II. Alwin, second earl of Lennox, died ante 1217; married Eva Daughter of Gilchrist, Earl of Mentieth. She died ante 1198.
— Alwin was named Earl of Lennox in a Charter by King Malcolm IV, 1164. The Earl of Menteith appeared as a witness to a charter circa 1175-1178 by King William, The Lion, granting certain privileges to the then new city of Glasgow. Their daughter
III. Eva married before 10 August 1217, Malcolm of Callendar, son of Duncan, Thane of Callendar.
— In 1217, Earl Maldouen, third Earl of Lennox, granted the lands of Glaskel or Gidswel in free marriage of Eva, his sister, with Malcolm, son of Duncan, Thane of Callendar.
IV. “Alwin, Thane of Callendar (wife unknown)
V. Sir John de Callendar died ante 22 February 1303/4; (wife unknown). Performed homage to Edward I, the great Plantagenet, 1296.
VI. Alwin de Callendar was 28 years of age in February 1303/4; name of wife unknown.
VII. Sir Patrick de Callendar forfeited ante 1345; name of wife unknown.
VIII. Christian de Callendar married 1345, Sir William de Livingston, Knight Banneret, ancestor of the Livingstons of Callendar
Note: Unlike many portions of this compilation, no references are provided for the above names and data. The compiler provided a bibliography, which smacks of slapdash accounting for matter not cited.
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Note: Received the Barony of Killsyth which became the possession of her husband Malcolm Thane of Calendar.

1. History of Clan Macfarlane Vol I pub.1922, James Macfarlane, (published 1922 by David J. Clarke of Glasgow)
2. Stirnet Genealogy, Peter Barns-Graham, Lennox1 (Reliability: 3) – Subscription req. to avoid interruption.
3. The House of Lennox, by Chevalier Terrance Gach MacFarlane, p.4 (Reliability: 3) – Stirnet indicates this book is “a work in progress,...” (July 2004). As of 23 May 2023, it has either been published under a different title, or its completion is long overdue.