Glendun as a Baby Name. Meaning and Origin of Glendun

What is the meaning of the name Glendun ?

The baby name Glendun is a Male name , 2 syllables long and is pronounced GLEN-dun (IPA: /ˈɡlɛn.dʌn/).

Glendun is Irish in Origin.

Glendun pairs Gaelic gleann "valley" with a second element read as the River Dun (from Irish donn "brown") or Gaelic dún "fort." As a place-name, it is best known for the Antrim glen in Northern Ireland - one of the Nine Glens - often glossed "valley of the (brown) Dun," evoking peaty waters and steep, rugged sides. Hence the name suggests wild, protective landscapes: valley by a brown river or valley of a fort.

Used as a given name only rarely, Glendun is a modern toponymic choice in the Anglophone world, sometimes honoring Ulster roots or the glen’s Red Arch bridge. Variants include Glendon (more common), Glendin/Glendyn, and short form Glen/Glenn; the feminine Glenda is related. Cognate elements link it to Duncan and Dunbar, though these are not direct variants.

⚙ We have no record of Glendun in any national birth registry or name dataset. Most often that means a rare name, a regional or heritage one, or a recent coinage. Either way, it remains a genuinely rare choice.