Breakthrough Research (2003): Edward J. Davies has found evidence for Augustine Walker, Great Amwell, Hertfordshire, as the father of Elizabeth, who married Richard Warren on 14 April 1610, in that same location. (The American Genealogist, April 2003, v. 78, no. 2, p. 81-86)

Biographical Sketch (1969):6, p. 3-4. "Elizabeth Warren was left with seven children ranging in age from Mary, age eighteen, to an infant of one year to continue life in the new wilderness the Puritans had chosen. Elizabeth survived her husband more than fifty years and was one of the few widows in the Colony who did not remarry."

Biographical Sketch (1985):37, v. 3, p. 619-620. "[Richard Warren] married in England, Elizabeth —, who followed him to Plymouth in the ‘Ann’ in 1623, accompanied by her daughters. Mrs. Warren was rated in the Plymouth tax list of 1632-3, and was one of the first purchasers of Dartmouth. A study of early Plymouth records leads to the conclusion that she was a woman of force and social position in the community, and she is therein usually spoken of as ‘Mistress’ Elizabeth Warren, a designation by no means common. And she is one of the rare instances in that early colony of continued widowhood. A glimpse of one side of her domestic life is to be had in connection with the prosecution by the General Court of her servant, Thomas Williams, 5 July 1635, for ‘speaking profane & blasphemous speeches against ye majestie of God’. ‘There being some dissention between him and his dame, she after other things, exhorted him to hear God & doe his duty’ (Plymouth Colony Records, I, 35). Upon the marriage of her daughters, Mrs. Warren conveyed to their respective husbands certain lands, variously located at Eel River and Wellingsly (Plymouth Colony Records, XII, 27, 53). She died at Plymouth 2 October 1673, aged above ninety years. For some unknown reason, unless there is a mistake in the records, she was not buried until the twenty-second day after her death, when it was entered on the records that she, ‘having lived a godly life, came to her grave as a shoke of corn fully ripe’ (Plymouth Colony Records, VIII, 35)."

Biographical Sketch (1985):37, v. 3, p. 619-620. "Her maiden name is not known. In the Warren Genealogy, published in 1854 by Dr. John Collins Warren, her name is given as Elizabeth Juatt. While it is true that a certain Richard Warren of Greenwich in Kent married Elizabeth, daughter of — Ivat and widow of — Marsh, as appears in the 1620 visitation of Devon, there is no proof that that Richard Warren is the one who came to Plymouth. The late Horatio Gates Somerby, who supplied the abstracts and copies of English records used by Dr. Warren, told me not many years before his death that he did not see proof sheets of Dr. Warren’s book, and that he did not identify the Richard Warren of Plymouth and the John Warren of Watertown as the Richard and the John Warren of Devonshire visitation. In the tabular pedigree at the end of Dr. Warren’s book, he has assumed that the Richard and John of the visitation pedigree were the New England men. At the time when the book was published it was not unusual to assume connection with English families on evidence as slight as the similarity of names. Modern critical researchers have overthrown many of such assumptions.

In this same tabular pedigree Peter Warren of Boston (great grandfather of Gen. Joseph Warren, who was killed at Bunker Hill), is given as the son of John Warren of Watertown. The late Dr. Henry Bond, compiler of Watertown Genealogies, told me that he had found ample proof that Peter Warren was not the son of John of Watertown. — John Ward Dean

In 1872 the Harleian Society published an edition of the Devonshire Visitation of 1620, and in this edition the much discussed Warren pedigree appeared, with the statement, ‘inserted by later hand’. That it was not the work of the visiting heralds of 1620, and that the John and Richard, named as sons of Christopher Warren of the pedigree, are not identical with Richard Warren of the Mayflower, and John Warren of Watertown, is clear from the following facts: Christopher Warren married Alice Webb, 15 June, 1613. His second son, John, was born in 1617, hence not the John Warren, ‘aged about 45 years’, who emigrated to Massachusetts in 1630, in the fleet with Saltonstall, and became the founder of the Warrens of Watertown. Richard, the third son of Christopher Warren, was baptised at Sydenham Damrell, 15 August 1619, and was five years younger than his wife, Mrs. Elizabeth March, who was not licensed to marry her first husband until 1629. The license reads: ‘March, Francis, gent., of Stepney, bachelor, 26, and Elizabeth Ivatt of St. Botolph, Aldgate, spinster, 15, daughter of Oliver Ivatt, deceased, consent of Hugh Bourman her father (in law), at Westham, Essex, 20 August 1629 (London Marriage Licenses). This first marriage of Elizabeth (Ivatt) March was one year after Richard Warren, the Mayflower Pilgrim, had died at Plymouth, Massachusetts. — J. Granville Leach."