The name is from germanic origin and means 'fighting the ice battle' it is often pronounced as i-ZOL-de or i-SOL-de.
― Anonymous User 7/28/2017
0
Isolde, a Dublin princess, was pledged to King Mark of Cornwall and did fall in love with Tristan who was sent to collect her. However although Tristan was slain and too wounded for Isolde's famous herbal remedies to cure him she lived on and reigned as a fair and wise Queen with King Mark. Isolda's tower marked the boundary between Dublin (the Pale) and the wild Irish. It was rediscovered along the quays in Dublin in July 1993.
It's from the pan-Celtic root word seullt (to gaze upon) or Welsh syllt (fair to look upon) + y (the), the beautiful one, in a physical sense. Ysyllt, Iseult, Isolde.