The name Laoise is a girl's name of Irish, Irish Gaelic origin meaning "light". Laoise and is often added to user-created lists like Power Names/Fantasy and discussed in our forums with posts like "Names on NB that make you go WOW!".
From the experts:
Pronounced lee-sha, Laoise is the feminine form of the Irish mythological names Lugh and Lugus, which means light. Lugus was the Celtic god of commerce and craftsmanship, the equivalent of the Roman Mercury, thought to inspire the later Irish hero Lugh. Laoise is in the Irish Top 100, but Americans will definitely have pronunciation issues.