Caher - round stone fort. Near Caherdaniel: Gaelic Cathair Donall -- Daniel - from the name Donall or Domnhall -- Donall's Stone Fort? Naming sites vary. There is a second stone fort there. See http://www.theringofkerry.com/index.php?Itemid=22
This ring fort is near Castlecove and the town of Caherdaniel, see http://www.sneem.net/staiguefort/ No mortar was used for this large undertaking, still standing. Dating perhaps from the first through the sixth century BC, Celtic period, it was a defense site, an observation post, and perhaps other uses -- copper is in the area. See http://irishantiquities.bravehost.com/kerry/caherdaniel/caherdaniel.html.
The history of Irish peoples, those arriving by migration, invasion or happenstance, or already here, is a complex one: dark complexions are not unusual and have a variety of explanations, see the Black Irish at http://www.ireland-information.com/articles/blackirish.htm.
Black Irish may have been merely a differentiation from indigenous of "Gaelic" Irish. Or:
- coloring of European mainland Celts
- Vikings, where the word for "dark" (dubh) was often used in conjunction with "gall" or foreign, see site discussion of dark also used as to intentions (thus blond Norse as dark)?
- Descendants of Spanish traders, populations passing through Spain, such as ancient Milesians, even with origins in Middle East. Legends blend.
- More. See site.