- Born: Abt 1364, Lathom, Lancashire, England
- Marriage: Sir John Stanley Kinght of the Garter about 1385 824
- Died: 26 Oct 1414, Lathom, Lancashire, England about age 50 529,721
~Weis' Ancestral Roots . . ., 8th Edition, 57:34, Isabella de Lathom married Sir John Stanley, Knight of the Gater. Isabel was the daughter of Sir Thomas de Lathom and Joan de Venables. 160
~Pedigrees of some of the Emperor Charlemagne's Descendants, Vol. II, p. 100, Isabel de Lathom, m. Sir John Stanley, K.G., Lord Lieutenant of Ireland, Constable of Rokesbergh, Scotland, constable of Windsor Castle, Steward of the King's Household. 529
~Magna Charta Sureties, Weis, 103:8 526
~ Cokayne's Complete Peerage (Stanley) , p.249 footnote (k), mentions that she was her father's heiress. She and John were granted a dispensation for their marriage in 1398. It seems to be suggested that the couple were third cousins once removed through the Mascys. 141
~George Ormerod's The History of County Palatine and City of Chester, Vol III, pg. 199 713
Noted events in her life were:
• Background Information. 863
Isabella, the sister of the last Thomas de Lathom, and wife of John Stanley, a younger brother of Hooton, rested her claim on an alleged settlement brought forward after he brother's death, as stated by the Duke of Lancaster. In 9 Henry IV, and perhaps previously, she had succeeded to Elana, her niece, and was in possession of the domains of her fathers, as in that year, her husband, afterwards Steward of the Household, had charter of Fee Warren in Lathum, Knowslegh, Childwall, roby and Aulasargh.
From Isabella de Lathom and her husband Sir John Stanley descended the noble Houses of Derby, Monteagle and Stanley of Alderley, other male branches of Stanley, and numberous female lines, through which descent from this House is claimed by most of the ancient families of either Palatinate.
~Parentalia, Genealogical Memoirs, p. 72
Isabella married Sir John Stanley Kinght of the Garter, son of Sir William Stanley Forester of Wiral and Unknown, about 1385.824 (Sir John Stanley Kinght of the Garter was born in 1350 in Stanley, Staffordshire, England,529 died on 6 Jan 1413-1414 in Ardee, Dublin, Ireland 529,721 and was buried in Burscough Priory.)