 The origin of the name is uncertain but is thought to be a Gothic or Indo-Aryan term assigned to a Slavic tribe.The oldest preserved record of the Croatian ethnonym "*xъrvatъ" is of the variable stem, attested in the Baška tablet in style "zvъnъmirъ kralъ xrъvatъskъ" ("Zvonimir, Croatian king").The first attestation of the Latin term is attributed to a charter of Duke Trpimir from the year 852.