Her birth date is listed as 1196, abt 1200, and 1208 in various sources. Her mother was born in 1174.
Death About 1296
Buried in Brackley, Aberdeenshire, Scotland.
Burial 1245 Brackley, Northamptonshire, England
Helen (also known as Ela or Elena) had two half-sisters and co-heiresses, Devorguilla (or 'Derborgaill', mother of King John of Scotland), and Christina (or 'Cairistiona'). Helen, eldest daughter and co-heiress of Alan, Lord of Galloway. Countess of Winchester. Without legitimate sons to succeed him, Alan's lands and dignities were divided between the husbands of his three daughters, so Roger acquired Alan's position as Constable of Scotland, and one-third of the lordship of Galloway (although the actual title of Lord of Galloway went through Helen's half-sister Devorguilla to her husband John I de Balliol).
The three daughters of Roger and Helen of Galloway were: :Helen (also known as Ela or Elena), who married Alan Baron Zouche of Ashby; :Elizabeth (also known as Isabella) married Alexander Comyn, 2nd Earl of Buchan; :Margaret married William de Ferrers, 5th Earl of Derby (and was thus stepmother to her own stepmother).
Frederick Lewis Weis, Th. D. Magna Charta Sureties, 1215, The Fourth Edition (With Additions and Corrections By Walter Lee Sheppard, Jr., M. S.; 1971