The Bishop of St. Andrews (Scottish Gaelic: Easbaig Chill Rìmhinn, Scots: Beeshop o Saunt Andras) was the ecclesiastical head of the Diocese of St Andrews in the Catholic Church and then, from 14 August 1472, as Archbishop of St Andrews (Scottish Gaelic: Àrd-easbaig Chill Rìmhinn), the Archdiocese of St Andrews. The bishopric itself appears to originate in the period 700–900. By the 11th century, it is clear that it was the most important bishopric in Scotland.