Historians are not completely certain when Owain Glyndŵr was born, but the most commonly accepted date is 28 May 1354, with some sources more generally giving around 1354 or a range between 1349 and 1359.

Quick Scoop: Owain Glyndŵr’s Birth

  • Most scholarly references place his birth around 1354.
  • A commonly cited specific date is 28 May 1354.
  • Some Welsh history sources say the exact year is uncertain, suggesting 1349, 1354, or 1359 as the most likely options.
  • He was born at Sycharth in north-east Wales , the family seat, according to major encyclopedias and biography-style entries.

Why the Confusion?

Medieval Welsh records for gentry families can be patchy, so historians reconstruct his birth year from later references, his age during known events, and property documents rather than a single clear baptism or birth record.

In modern biographies and reference works, you will usually see him described as “born c. 1354” or given the specific date “28 May 1354,” with a note that the year is not absolutely certain.

TL;DR: When people ask “when was Owain Glyndŵr born,” the best-supported answer is 28 May 1354 at Sycharth, north-east Wales , though historians treat 1354 (and occasionally a slightly wider range) as an approximate date rather than a fully proven one.

Information gathered from public forums or data available on the internet and portrayed here.