Thomas the Archdeacon (Latin: Thomas Archidiaconus; Italian: Tommaso Arcidiacono; Croatian: Toma Arhiđakon; c. 1200 – 8 May 1268), also known as Thomas of Spalato (Latin: Thomas Spalatensis, Hungarian: Spalatói Tamás, Croatian: Toma Splićanin), was a Roman Catholic cleric, historian and chronicler from Split (Spalato). He is often referred to as one of the greatest sources in the historiography of Croatian lands.[1]