The court in Trstionica (present-day Kraljeva Sutjeska) was established by Ban of Bosnia, Stjepan II Kotromanić.

The remains of the royal court are situated on the small prominence next to the Kraljeva Sutjeska Franciscan friary and church.

St. Gregory has been the patron saint of Bosnia and Herzegovina from the medieval times until 26 August 1752, when he was replaced by St. Elijah (Sveti Ilija), and confirmed by papacy, at the request of a Bosnian Franciscan friar, Bishop Pavao Dragičević.

It has been suggested that Elijah was chosen because of his importance to all three main religious groups in Bosnia and Herzegovina—Catholics, Muslims and Orthodox Christians.

[9][11][10] The excavations of 1969 to 1970, led by Pavao Anđelić of University of Sarajevo, unearthed foundations and walls of several buildings, including a church, an eastern palace, and western part of the court.

In its close proximity is the location of medieval royal castle of Bobovac, the crown jewels of Bosnia were held.