What is "marrucini"

The Marrucini were an Italic tribe that occupied a small strip of territory around the ancient Teate (modern Chieti), on the east coast of Abruzzo, Italy, limited by the Aterno and Foro Rivers. Other Marrucini centers included Ceio ( San Valentino in Abruzzo Citeriore), ''Iterpromium ''(whose ruins are under the Abbey of San Clemente at Casauria), ''Civitas Danzica ''( Rapino), and the port of Aternum ( Pescara), shared with the Vestini.