Circle of Stars
The Circle of Stars are a guild of wizards and spellcasters. They are based in Erlestoke and have a representative on Erlestoke's Guild Council.
That representative, and the guild's leader, Axel, was murdered shortly before a council feast to kick off the Greenspell Tournament resulting is a big old mess for the characters (who were at the feast to investigate an alleged imposter on the council).
The new and current leader of the Circle of Stars is Borianroth. The adventurer's friend, ally and all-around Elf dreamboat Thanel is a member of the Circle of Stars stationed at the Starry Tower in Hythe.