Etymology in the sources
Source-reportedBorrowed from West Frisian Tjeerd, Tjaard, from Old Frisian Thiadward and/or Thiadhard, containing the Germanic elements *þeudaz (“people”) and either *wardaz (“ward”) or *harduz (“hard, brave”). Compare German Dietward, Diethard.
Sources for this account (2)
- Wiktionary: TjeerdCC-BY-SA-4.0 · retrieved 2026-10-15
- Dutch Wiktionary: TjeerdCC-BY-SA-4.0 · retrieved 2026-10-14

