Sigurd Hjort Helgasson 
Sigurd Hjort's father was Olaf the Mighty' Halfdansson and his mother was Helgi Halfdansdatter. His maternal grandparents were Halfdan III Frodasson Denmark and Sigris Frodadatter. He had a sister named Yrsa. He had a half-brother named Alf.General Notes
_MED Book
ABBR Royalty for Commoners
TITL Royalty for Commoners: The Complete Known Lineage of John of Gaunt, Son of Edward III, King of England, and Queen Philippa
AUTH Roderick W. Stuart
PUBL 3rd ed., 1998, Genealogical Publishing Co., Inc., Baltimore, MD
DATE 20 JUL 1999
_MED Book
ABBR Royalty for Commoners
TITL Royalty for Commoners: The Complete Known Lineage of John of Gaunt, Son of Edward III, King of England, and Queen Philippa
AUTH Roderick W. Stuart
PUBL 3rd ed., 1998, Genealogical Publishing Co., Inc., Baltimore, MD
DATE 20 JUL 1999
Family Notes
DATE 20 JUL 1999
22:13
DATE 20 JUL 1999
22:13
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