House of the Fountain

The House of the Fountain was one of the Twelve Houses of the Gondothlim, led by Ecthelion of the Fountain. They were said to delight in silver and diamonds, and their swords were long and bright and pale. They went into battle to the music of flutes. During the Fall of Gondolin they were held in reserve by Turgon, who unleashed them after the balrogs made a breach in the wall.

"The crystal and silver of their array was most lovely to see amid the red light of the fires and the blackness of the ruins"

― The Book of Lost Tales 2, Fall of Gondolin