InIrish mythology,Lén was the craftsman of Síd Buidb, the 'sídhe ofBodb'.[1] The son of Ban Bolgach son of Bannach, he was said to reside under a lake nearKillarney namedLoch Léin after him. TheDindsenchas relate that Loch Léin was where he would make bright vessels forFand the Long-Haired, the daughter ofFlidais.[1] Every night, after finishing his work, it is written[1] that he used to fling his anvil away to a nearby hill called theIndeoin na nDési or 'Anvil of theDési' and the showers that came from the back of the hill were said to be pearls off his anvil as it was flung.[1] Whether the nameLén can bephilologically related to theRomano-Celtic godLenus is disputable. While the meaning of the name is uncertain, theOld Irish wordslén 'defeat, misfortune'[2] andlénaid 'injure, wound'[3] and theWelshllwyn 'grove, bush, shrub'[4] may offer some basis for comparison.