Lisbon Regicide led the ceremonies by placing flowers on the site where the assassination had taken place and celebrated a mass in their memory at the Church of São Vicente de Fora (where they are buried). During the centenary year many artistic, cultural, and historic events took place in honor of King Carlos I and the royal family, and several books on the subject were published. Lisbon Regicide The Lisbon Regicide () was the murder of King Carlos I of Portugal and the Algarves and his heir-apparent, Luís Filipe, Prince Royal of Portugal, by assassins sympathetic to Republican interests and aided by
Learchus (regicide) with his queen, Eryxo. Arcesilaus appointed Learchus as his advisor. Herodotus states that Learchus was his brother, but Plutarch contradicts him in saying that Learchus was an ill-mannered and vicious friend. A further contradiction is presented in that Herodotus speaks of the activities of Learchus as the activities of the "brothers of Arcesilaus" and does not mention Learchus by name until he is identified as the regicide of Arcesilaus. Arcesilaus followed the counsels of Learchus and became increasingly tyrannical. It is in this manner that Arcesilaus gained the epithet "the Oppressor." During this time, Learchus was secretly plotting to overthrow