Etymology: Derived from the Irish name 'Síle', which is believed to be a Gaelic form of Celia, itself stemming from the Latin 'caelum' meaning 'heaven' or 'sky'. Over time, it became associated with the Irish word 'síol' (seed) or misinterpreted as relating to 'dealsa' (flame), leading to the meaning 'fire' or 'blaze'.