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- [S830] Paul C. Reed, "Another Look at Joan de Harley: Will Her Real Descendants Please Rise?" The Genealogist 10:35, Spring 1989, p. 35.
- [S351] Walter Lee Sheppard, "Joan, Princess of Wales, Daughter of King John: Ancestress to Bulkeley, James, Mellowes, Welby, Whittingham, Haugh, and St. John-Whiting Families." The American Genealogist 35:29, 1959.
- [S977] The Blackmans of Knight's Creek: Ancestors and Descendants of George and Maria (Smith) Blackman by Henry James Young. Carlisle, Pennsylvania: 1980.
- [S142] Royal Ancestry: A Study in Colonial and Medieval Families by Douglas Richardson. Salt Lake City, 2013.
- [S47] The History of Parliament. Some citations point to entries from the printed volumes not yet added to the online site.
- [S1176] Antiquities of Shropshire, Vol. X, by Robert William Eyton. London: John Russell Smith, 1860., month and year only.
- [S1016] Medieval English Ancestors of Robert Abell by Carl Boyer III. Santa Clarita, California, 2001.
- [S1987] F. N. Craig, "Corrections and Additions to the Purefoy Line in the Maternal Ancestry of Governor Thomas Dudley of Massachusetts Bay." The American Genealogist 77:57, January 2002., year only.
- [S1987] F. N. Craig, "Corrections and Additions to the Purefoy Line in the Maternal Ancestry of Governor Thomas Dudley of Massachusetts Bay." The American Genealogist 77:57, January 2002.
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