Zvonimir was crowned on 8 October 1076 at Solin in the Basilica of Saint Peter and Moses (known today as the Hollow Church) by a representative of Pope Gregory VII (1073–1085). Zvonimir took an oath of fealty to the Pope, promising to support the implementation of the Church reforms in Croatia. After his coronation, Zvonimir in 1076 gave the Benedictine monastery of Saint Gregory in Vrana to the Pope, both as a sign of loyalty and as accommodation for papal legates visiting Croatia. The title of Zvonimir was "King of Croatia and Dalmatia" (), while his name and title in Croatian language, as found on the Baška tablet, was "Zvonimir, kral hrvatski" (), in Glagolitic script "zvъnъmirъ, kralъ xrъvatъskъ". He took the Christian name of "Demetrius" at the coronation, most likely after the saint Pope Demetrius I of Alexandria.