Co-cathedral

A co-cathedral is a cathedral church which shares the function of being a bishop's seat, or cathedra, with another cathedral. Instances of this occurred in England before the Protestant Reformation in the dioceses of Bath and Wells, and of Coventry and Lichfield, hence the names of these dioceses. In France the bishop of Couserans (a see suppressed at the Revolution) had two co-cathedral churches at Saint-Lizier, and the bishop of Sisteron (a see also suppressed) had a second throne in the church of Forcalquier which is still called La Con-cathédrale.