She was a direct descendant of JOAN BEAUFORT, QUEEN of SCOTS to a granddaughter of JOHN ALDEN.
circa 1457, at RavencraigCastle, Kirkaldy,Fifeshire, SCOTLAND
Death: circa March 21, 1518 (53-69), at Dunkeld, Scotland; Burial: Perthshire, Dunkeld Cathedral, Scotland
Family: Daughter of Sir William Sinclair, 1st Earl of Caithness and Marjory SUTHERLAND of Dunbeath
Wife of John Stewart;
Children: Marjory Stewart; Margaret Stewart; Elspeth Stewart; John Stewart, 2nd Earl of Atholl; Christian Stewart; Jean Stewart; Lady Elizabeth Stewart; Andrew Stewart; Jean Stewart; Elizabeth Stewart; Agnes Stewart and Henry Stewart;
Siblings: Elizabeth Sinclair; Robert Sinclair; Arthur Sinclair; Marjory Sinclair; Sir Oliver Sinclair of Rosslyn; George Sinclair and Sir William Sinclair, 2nd Earl of Caithness; and half-sister of William Sinclair; Margaret Sinclair; Susan Sinclair; Katherine Sinclair and William Sinclair;

Other sources say:
Countess Eleanor "Countess of Atholl" Stewart formerly Sinclair
Born about 19 Apr 1457 in Ravenscraig, Fifeshire, Scotlandmap
ANCESTORS:Daughter of William Sinclair and Marjory (Sutherland) Sinclair;
Sister of Elizabeth Sinclair [half], William Sinclair [half], Catherine Sinclair [half], William Sinclair, John Sinclair, Robert Sinclair, Marion Sinclair, Susan Sinclair [half], Sir Oliver Roslin Sinclair, Arthur Sinclair [half], George Sinclair, Alexander Sinclair and Margaret (Sinclair) Boswell
Wife of John Stewart — married Apr 1475 [location unknown]
DESCENDANTS descendants
Mother of Jean (Stewart) Arbuthnot, Christian Stewart, Elspeth (Stewart) Innes, Isabel (Stewart) Robertson, Elizabeth (Stewart) Ross, Margaret Stewart, John Stewart, Elizabeth (Stewart) Robertson, Jean Stewart, Andrew Stewart, Margaret (Stewart) Murray and Mariote (Stewart) Campbell
Died 21 Mar 1519 in Dunkeld, Perthshire, Scotlandmap.

LINEAGE to QUEEN OF SCOTS, to granddaughter of JOHN ALDEN, Abigail BYRAM:
Abigail Byram to her mother, Anna ALDEN (of Joseph KEITH; m. Capt. Ebenezer), to
his father, Lt. Joseph Keith;
his father, Rev. James Keith;
his father, Alexander Keith;
his father, George Keith, 4th Earl Marischal
his mother, Elizabeth Hay
her mother, Margaret Robertson of Struan
her mother, Lady Elizabeth Stewart
her father, John Stewart
his mother, Joan Beaufort, QUEEN OF SCOTS.

Other lineage: HM George I's 6-Great Grandfather. U.S. President [B, HARRISON]'s 9-Great Grandfather. PM Churchill's 13-Great Grandfather. Lady Diana's 15-Great Grandfather. PM Cameron's 15-Great Grandfather. HRH Albert II's 15-Great Grandfather. Louis XVII's 10-Great Grandfather. HM Margrethe II's 15-Great Grandfather.