House of the Hammer of Wrath
The "Book of Lost Tales 2" contains a description of the 11 Houses of the Gondolindrim, known in canon only through Glorfindel of Gondolin of the House of the Golden Flower and Galdor of the Tree.
From the House of the Hammer of Wrath came many of the best smiths and craftsmen of the Gondolindrim, and they revered Aulë above all the other Valar. In the early days, many of them had been recruited from those Noldor who escaped from Morgoth's mines, and the hate of the House for all his works and creatures was great.
Their sign was the Stricken Anvil, and a hammer that "smiteth sparks about it" was set on their shields. Red gold and black iron was their delight. They fought with great maces, and their shields were heavy. Their leader was Rog, second only in valour to Galdor.
From the House of the Hammer of Wrath came many of the best smiths and craftsmen of the Gondolindrim, and they revered Aulë above all the other Valar. In the early days, many of them had been recruited from those Noldor who escaped from Morgoth's mines, and the hate of the House for all his works and creatures was great.
Their sign was the Stricken Anvil, and a hammer that "smiteth sparks about it" was set on their shields. Red gold and black iron was their delight. They fought with great maces, and their shields were heavy. Their leader was Rog, second only in valour to Galdor.
Encyclopedia entry originally written by atalante_star