There are multiple origins and translations for the name Ciara:
1. Derived from the Irish word (ciar) which actually means - "dark"
2. Derivative form of the name Cera (St Ciara)
3. Derivative form of the name Sarah/Sara - "lady; princess; mistress".
Holy Ciara (d. C. 680) - Irish Maid, the Catholic Saint. Name-day; October 16, Jan. 5