The "three pointed" oil lamp? Real or fantasy?

[Titus Petronicus Graccus]

some of them stoneware/terracotta?

I should mention that one of the vendors on RAT, Julia Passamonti, can do four to six wick pottery hanging lamps. I think she has images on her Venetian Cat website

Lovely site! Thanks very much for pointing it out.
Some great ideas there.