Jade

There are two Troll females in the Discworld canon named Jade.

Princess Jade, who was educated at Quirm College for Young Ladies at the same time as Susan and Gloria Thogsdaughter, during the events of Soul Music.

There is also a Troll named Jade in Monstrous Regiment. She adopted the alias Carborundum in order to sound more male to the Borogravian Army recruiters. She proved incapable of holding her drink, but helped the Monstrous Regiment (what there is of it) and Polly Perks to a definitive (well - for now) truce with the Zlobenians.