Early lighthouses used various light sources, such as fires of wood or coal in open grates[1]. Mediaeval lighthouses in England used candles or oil lamps if the light was shown from within the tower[1]. However, after the Reformation, coal or wood fires illuminated the majority of lighthouses, though a few were lit by candles[1].
The Eddystone required a different approach, so candles were used from its first construction until oil lamps were later substituted[1]. Oil as a lighthouse luminant came into use around the mid-18th century, and in 1763, reflectors were used to increase the intensity of light shown[1].
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