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
Letters on a Regicide Peace Regicide Peace". An unauthorized version, printed by John Owen, a printer who had worked on the letters earlier in the year, appeared the day before Burke's edition was published. Burke's letters were popular, and the work went into 11 editions by the end of 1796. The last of the letters written, but the third in the series, was occasioned by the inability of Pitt's ministry to make peace with France; on 19 December 1796, Britain's envoy was expelled by the French. The letter included the subtitle "On the rupture of the negotiations, the terms of peace proposed, and the resources