Trillium

Trillium is a kingdom on Eamon that has a friendly relationship with the Kingdom of Evenhold. The kingdom is mentioned by Jim Jacobson in The Quest for Trezore when he notes that the beautiful Princess Mara is the daughter of King Mahn, the ruler of Trillium. In the original version of the adventure, Jacobson describes Mahn as "a great friend of your kingdom"; in the Eamon Deluxe version, Frank Black instead describes Mahn as "a local political bigwig." While Trillium is likely near or adjacent to the Kingdom, it's location relative to Evenhold is unknown.