In the earliest period of the diocese, the episcopal see was often referred to as Tír Conaill (the surrounding region).
It was also sometimes written as Ráith Both, the Middle Irish spelling of the location.
In 1266, Bishop Germanus of Derry forcibly transferred the Inishowen peninsula from the jurisdiction of the Diocese of Raphoe to the Diocese of Derry.
In the Catholic Church, the title continues as a separate bishopric.
The current Incumbent is The Most Reverend Alan McGuckian, SJ, Bishop of the Roman Catholic Diocese of Raphoe, who was appointed by the Holy See on 9 June 2017 and ordained Bishop on 6 August 2017.