Ralel

Scion of Forest Elf nobility, Ralel's family has long since lost much of its influence and stature. Nevertheless, Ralel managed to wed the woman who would become the Mayor of Leth Deriel, city of the Forest Elves. He had ties to both the city and to Queen Morganae, ruler of northern Ilithi, but he chafed under what he viewed as the dwindling significance of his people and the Human-rule of his city. Ralel formed a terrorist group known as the L'Karm and attempted to foment rebellion in Leth Deriel, but after he was tried by the united monarchs of the Five Provinces, his movement fell apart.

From The Undying Threat (book):

...Then there was the case of Ralel, who devised extremely dangerous creatures infected with a necromantic poison... a poison which they would then spread. Ralel employed these monsters to further his goals as an Elven separatist, who sought independent sovereignty for the city of Leth Deriel. He was also a member of the court of Queen Morganae -- interesting, that, considering that her greatest rivals are Necromancers. Perhaps she employed Ralel, and gave him such wide latitude in his affairs, in order that she may have a counterbalancing force against Sidhlot; one Necromancer to combat another...