The Diocese of Llandaff was formed in the 5th century with the 1st Bishop, Dyfrig. However, it was Euddogwy, the 3rd Bishop, who settled in Llandaff itself in the 6th Century and established Llandaff as the seat of the Diocese. Although Llandaff is the smallest, geographical, diocese in Wales, it has nearly half of the population of Wales, over a million people, residing in it. For more information on the diocese, you can access the Diocesan Profile here or visit the website - https://llandaff.churchinwales.org.u k/en/