Sources
🟢 Primary Evidence
🟡 Secondary Evidence
🟠 Tertiary Evidence
🔴 Unreliable Evidence
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- [S310] Moriarty, G. Andrews. The Descent of the Plantagenet Kings from the Holy Roman Emperors, (Boston: The New England Historical and Genealogical Register, volume CI, January 1947).
- [S1603] GENi, (https://www.geni.com ), Gisela of Swabia, Holy Roman Empress.
- [S1603] GENi, (https://www.geni.com ), Conrad II, Holy Roman Emperor.
- [S60] Stuart, Roderick W., Royalty for Commoners, The Complete Known Lineage of John of Gaunt, Son of Edward III, King of England, and Queen Philippa Fourth Edition, (Baltimore, Maryland: Genealogical Publishing Company, 2002).
- [S63] von Redlisch, Marcellus Donald Alexander R. Pedigrees of Some of the Emperor Charlemagne's Descendants volume 1 , (Cottonport, Louisiana: Order of the Crown of Charlemagne, 1941).
- [S59] Weis, Frederick Lewis. Ancestral Roots of Sixty Colonists Who Came to New England Between 1623 and 1650 Fifth Editionif, (Baltimore, Maryland: Genealogical Publishing Co., 1982).
- [S304] Wikipedia, Gisela of Swabia.
- [S304] Wikipedia, Conrad II, Holy Roman Emperor.
- [S304] Wikipedia, Herman II, Duke of Swabia.
- [S1851] Wolf, Armin. "Who was Agatha, the Ancestress of Scottish and English Kings?", (Vowchurch, UK: Foundations: Journal of the Foundation for Medieval Genealogy, 2011).
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