But she pursued them through their tangled lair
And caught them, and put fire-flies in their hair;
And then they all joined hands, and round and round
They danced a morris on the moonlit ground.

Charlton Miner Lewis (1866-1923) American scholar of English literature, author

Gawayne and the Green Knight, Canto 2 “Elfinhart” (1903)
    (Source)