Beatrix of Scotland

From notes in husband's About section:

The progenitor of the Clan Leslie is a man named Bartolf who was a nobleman from Hungary, who came to Scotland in 1067. Bartolf was in the retinue of Edgar the Ætheling, brother of Saint Margaret of Scotland, who was later the queen of Malcolm III of Scotland.Bartholf later married Malcolm III's sister, Princess Beatrix of Scotland.

https://gw.geneanet.org/foullon?lang=en&pz=alessio+alain+heribert+d...

Biography
Beatrix was born, say, 1040, an estimate based only on her husband's estimated birth. Her son, Malcolm, son of Bartholomew, succeeded his father as head of the house of Leslie about 1121. Malcolm's birth year is unknown. Bartholomew or Bartholf, a noble Hungarian, the founder of the family of Leslie, came to Scotland in the train of Margaret, afterwards the queen of Malcolm Canmore, in 1067.

Bartholomew, the founder of the family of Leslie in Scotland, married, according to some authorities, one of the ladies of honour to Queen Margaret. According to others. King Malcolm gave him to wife one of his own sisters, and this account is fortified by the best authorities. It was stated that, " Beatrix, daughter of King Duncan, and sister of Malcohn III. or Canmore, married Bartholomew, of whom all the Leslies in Scotland are descended."[1]

Research Notes
This profile was originally attached as a daughter of Duncan 1, king of Scots. No contemporaneous records or accounts by early historians make a single reference to Duncan I ever having had a daughter. There is no hint of a daughter in the Chronicle of Fordun, the Chronicle of Melrose or any of the Annals of that period. Later historians, including Sir James Balfour Paul (the Lord Lyon), Sir Archibald Dunbar, William Skene, Charles Cawley, G.W.S. Barrow, Alan Anderson, and Stewart Baldwin (ed. of the Henry Project) all are unanimous in the belief that King Duncan had only two (or possibly three) sons. The source which is cited in support of Beatrix's parentage is a book written by Col K.H. Leslie, a Leslie family genealogist.[2]
Col. Leslie claims that Bartholomew, the founder of the family of Leslie in Scotland, married one of King Malcolm's own sisters "and this account is fortified by the best authorities."[2] The only authorities which he mentions, however, are 1) the Rev. William Betham's Genealogical Tables, published in 1797,[3] which does not actually list Beatrix by name and which also appears to be completely unsourced; and 2) an artistic rendering of the Genealogical Tree of the Royal Family of Scotland done by John Brown, genealogist to the Prince of Wales. Although the relevant portion of this tree is not available to be viewed online, it can be seen here that it is an elaborately designed pedigree chart which also does not provide any sources. Although it did receive a warm endorsement from the Lyon office encouraging the public to purchase subscriptions to enable it to be published, this is a far cry from the Lord Lyon ratifying every detail of it. To the contrary, Sir James Balfour Paul (Lord Lyon) said of Col Leslie's account that "nothing of all this is authenticated and it will be shown that [Bartholomew] probably lived much later, while it is doubtful if he ever possessed Leslie."[4] It should be noted that Beatrix is also listed as a daughter of Duncan I on the Clan MacFarlane website,[5] however the sources cited there are Burkes (considered unreliable), a ged, stirnet, a family tree, and a popular (recent) history which does not appear to be available online. Beatrix has been detached from Duncan I's profile until reliable evidence can be found establishing that she was his daughter. Stevens-17832 19:23, 29 November 2021 (UTC)
Sources
↑ The Rev. William Betham, in his Genealogical Tables, published in 1795, states that Bartholomew married a sister of King Malcolm Canmore ; and in the Genealogical Tree of the Royal Family of Scotland, published 3d March 1792, by John Brown, Genealogist in Scotland to the Prince of Wales, and approved by the Lyon Office
↑ 2.0 2.1 Leslie, Colonel KH of Balquhain. Historical Records of the Family of Leslie. Edinburgh: Edmonston and Douglas (1869), vol. 1, p. 7.
↑ Betham, Rev. William. Genealogical Tables of the Sovereigns of the World. London: by the author (1795), Table DCXIX, p. 460.
↑ Paul, Sir James Balfour. The Scots Peerage. Edinburgh: D. Douglas (1904), vol. 7, pp. 264-265.
↑ Clan MacFarlane and associated clans genealogy website : Duncan I, King of Scotland (accessed 14 Sep 2020).
See Also:

Historical Records of the Family of Leslie from 1067 to 1868-9 ..., Volume 1 page 7 By Charles Joseph Leslie. Published March 3rd 1792 by John Brown, Scotland genealogist to the Price of Wales. Approved by the Lyon office.
Clan Macfarlane
Peerage.com
Betham, Rev. William. Genealogical Tables of the Sovereigns of the World. London: by the author (1795), Table DCXIX, p. 460.
Huntingdon, David. Chartulary of Lindores. Edinburgh: Edinburgh University Press, for the Scottish History Society (1903), available here.
Leslie, Colonel KH of Balquhain. Historical Records of the Family of Leslie. Edinburgh: Edmonston and Douglas (1869), vol. 1, p. 7.
Paul, Sir James Balfour. The Scots Peerage. Edinburgh: D. Douglas (1904), vol. 7, pp. 264-265.

https://www.wikitree.com/wiki/Unknown-590596