The first Benedictine monastery which was founded on the territory of Croatia, that we can confirm with certainty, was the monastery that was built in 852 by Duke Trpimir in Rižinice in Solin, not far from his court in Klis at the location of Rupotina, on the slope of the Kozjak hill. A fragment of an altar rail with the inscription pro duce Trepim[ero] serves as a witness for this event. The rootedness of the Benedictines and Benedictine culture in these areas is also evidenced by the inscription on the bronze door of the Montecassino Abbey church. The inscription lists the areas where the Benedictines left a deep mark, and Dalmatia is listed among them. The titular of the monastery was probably St. Peter.