Prince Henry Sinclair (Henry I Sinclair, Earl of Orkney, Lord of Roslin) (c. 1345 – c. 1400) was a powerful Scottish-Norwegian nobleman and a direct ancestor of ours in the Sinclair line. He was the grandfather of William Sinclair, the builder of Rosslyn Chapel, tying him closely to the family’s medieval legacy.
Historical Background
- Born around 1345, he was the son of Sir William Sinclair, Lord of Roslin, and Isabella of Strathearn (with connections to the earldom of Orkney).
- In 1379, King Haakon VI of Norway appointed him Earl of Orkney (a title held as a fief from Norway). He also served as Lord High Admiral of Scotland and held significant lands in Scotland.
- He was a capable noble involved in regional politics, fealty to Scandinavian kings, and defense of Orkney. He likely died around 1400, possibly killed defending Orkney against English raiders.
He was a real historical figure with documented power and titles spanning Scotland and Norse territories.
The Alleged Voyages (1398–1399)
The famous legend claims that in 1398, Prince Henry led a fleet of 8–12 ships with 200–300 men (including sailors, knights, and possibly monks) across the North Atlantic. He allegedly:
- Sailed to Greenland and then onward to North America.
- Landed first in what is now Nova Scotia (often cited as Guysborough Harbour) around June 1398.
- Explored further south, possibly to the Bay of Fundy, New England, or even Massachusetts.
- Wintered in the New World, built a ship, and returned — or left settlers behind.
Some versions add that he sought timber, new lands for settlement, or was on a crusading/ Templar-related mission. Proponents link it to:
- The Zeno Narrative (published 1558 by Nicolò Zeno the Younger): Letters and a map describing Venetian brothers Nicolò and Antonio Zeno sailing with a prince called “Zichmni” (phonetically linked by some to Sinclair) to Greenland and western lands. The narrative includes explorations, shipwrecks, and a colony.
- Alleged evidence like the Westford Knight carving in Massachusetts (said to be a Templar/Sinclair effigy), Mi’kmaq legends of white visitors, and Rosslyn Chapel carvings resembling maize or aloe.
Historical Consensus: Legend, Not Proven Fact
Map illustrating the travels of the Zeno brothers voyage
Mainstream historians and scholars view this as a modern myth with little to no contemporary evidence:
- No 14th- or 15th-century Scottish, Norwegian, or Venetian records mention such a voyage by Henry Sinclair.
- The Zeno Narrative is widely regarded as a hoax or heavily fictionalized work from 1558. The map appears derived from earlier known sources, and “Zichmni” identification with Sinclair originated in the late 18th century (e.g., Johann Reinhold Forster in 1784), not earlier.
- No archaeological proof of a Sinclair settlement exists in North America from that era. Claims about plants in Rosslyn Chapel are generally dismissed as stylized European flora.
- Henry was a capable seafarer given his Orkney role, but crossing the Atlantic with a fleet in that period would have been an extraordinary feat with no supporting documentation.
The story gained popularity in the 19th–20th centuries through books promoting pre-Columbian European (especially Northern European) discovery of America, sometimes with nationalist or esoteric angles (including unsubstantiated Templar/Knights connections — note that the Templars were suppressed in the early 1300s, long before Henry’s time).
Connection to Our Ancestry
As the grandfather of William Sinclair (1404-1484
our 15th great-grandfather,1st Earl of Caithness, builder of Rosslyn Chapel), Henry links our Douglas-Sinclair line to both real noble power in Orkney/Caithness and the romantic legends surrounding Rosslyn. His alleged voyage adds an adventurous, exploratory layer to the family story — from the Brave Heart of Douglas/Bruce to possible transatlantic daring.
In summary, Prince Henry Sinclair was a genuine medieval noble with strong Norse-Scottish ties, but the voyage to America remains an unproven (though enduring and entertaining) legend. It captures the spirit of exploration and the Sinclair family’s seafaring heritage, even if it lacks hard historical proof.
Thanks to Grok xAI for research and narrative assistance. -- Drifting Cowboy








