The Roman Catholic Diocese of Corneto had its see in Corneto, on old name for Tarquinia. It was absorbed by the Roman Catholic Diocese of Civitavecchia-Tarquinia
References
Roman Catholic Diocese of Corneto Wikipedia(Text) CC BY-SA
The Roman Catholic Diocese of Corneto had its see in Corneto, on old name for Tarquinia. It was absorbed by the Roman Catholic Diocese of Civitavecchia-Tarquinia