The second brother seems to have dropped out of history altogether.

Grim, Thane of Strathearn d. 1010

Grim, Thane of Strathearn was the son of Duncan, Mormaer of Atholl.1 He died in 1010, killed in action.1 He held the office of Baillie of Dule.1 He gained the title of Thane of Strathearn.1 He fought in the Battle of Mortlach in 1010.1

Citations

• [S60] Charles and Hugh Brogan Mosley, editor, American Presidential Families (London, U.K.: Alan Sutton and Morris Genealogical Books, 1994), page 45. Hereinafter cited as American Presidential Families. http://thepeerage.com/p32200.htm#i322000

Duncan, Mormaer of Atholl

Duncan, Mormaer of Atholl was the son of Duncan (?).2 He was Lay Abbot of Dunkeld.2 He was also known as Duncan O'Neill.3 He gained the title of Mormaer of Atholl.1 He fought in the Battle of Luncarty circa 990, where he commanded the left wing, and where the Danes were so crushingly defeated that their raids on that part of what subsequently became Perthshire, ceased.2

Children of Duncan, Mormaer of Atholl

• Grim, Thane of Strathearn2 d. 1010
• Duncan (?)2
• Crínáin of Dunkeld, Mormaer of Atholl+1 b. c 975, d. c 1045

Citations

• [S11] Alison Weir, Britain's Royal Families: The Complete Genealogy (London, U.K.: The Bodley Head, 1999), page 177. Hereinafter cited as Britain's Royal Families.
• [S60] Charles and Hugh Brogan Mosley, editor, American Presidential Families (London, U.K.: Alan Sutton and Morris Genealogical Books, 1994), page 45. Hereinafter cited as American Presidential Families.
• [S37] Charles Mosley, editor, Burke's Peerage, Baronetage & Knightage, 107th edition, 3 volumes (Wilmington, Delaware, U.S.A.: Burke's Peerage (Genealogical Books) Ltd, 2003), volume 1, page 1206. Hereinafter cited as Burke's Peerage and Baronetage, 107th edition. http://thepeerage.com/p10767.htm#i107669

Battle of Mortlach

From Mortlach Kirk:

When Malcolm Canmore defeated a force of Danes led by Sweyn in a battle at Mortlach in 1010 he had the church enlarged by three spear lengths in celebration. The traditional site of the battle is on the haugh, or meadow, below the churchyard, though the official mapping from the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS) puts it almost immediately opposite the kirk, up the hill.

From Canmore: site record for Mortlach, The Battle Stone:

A symbol stone known as the 'Battle Stone' stands in the middle of the field below Mortlach churchyard (NJ33NW 10) On it are incised a Celtic cross, two fish, a bird, serpent, horseman, etc. A further stone, incised with an elephant symbol, was found in 1925 in the grave- yard, and has been built into the churchyard wall. - J R Allen and J Anderson 1903; W D Simpson 1926.