Dubricius, 6th-century saint who evangelised Ergyng (now Archenfield) and much of South-East Wales; his body was transferred to Llandaff Cathedral in 1120.

Teilo, 6th-century clergyman, church founder and saint.

Henry de Abergavenny, Bishop of Llandaff (1193–1218).

William de Braose, Bishop of Llandaff (1266–1287).

John of Monmouth, Bishop of Llandaff (1297–1323).

Edmund de Bromfield, Bishop of Llandaff (1390–1393).

John Paschal, Bishop of Llandaff (1347–1361).

John Smith, Bishop of Llandaff (1476–1478).

Sir David Mathew, (1400–1484), born Dafydd ap Mathew, was Lord of Llandaff and Seneschal of Llandaff Cathedral, and one of the ten Great Barons of Glamorgan, a Marcher Lord.
After saving the life of Edward IV at the Battle of Towton in 1461, he was appointed Grand Standard Bearer of England, and the King granted him the use of "Towton" on the Mathew family arms.

John Marshall (bishop), Bishop of Llandaff (1478–1496).

Miles Salley, Bishop of Llandaff (1500–1516/17).

Hugh Lloyd (bishop), Bishop of Llandaff (1660–1667).

Francis Davies, Bishop of Llandaff (1667–1675).

Edward Copleston, Bishop of Llandaff (1828–1849).

Alfred Ollivant, Bishop of Llandaff (1849–1882).
Dubricius, 6th-century saint who evangelised Ergyng (now Archenfield) and much of South-East Wales; his body was transferred to Llandaff Cathedral in 1120.
Teilo, 6th-century clergyman, church founder and saint.
Henry de Abergavenny, Bishop of Llandaff (1193–1218).
William de Braose, Bishop of Llandaff (1266–1287).
John of Monmouth, Bishop of Llandaff (1297–1323).
Edmund de Bromfield, Bishop of Llandaff (1390–1393).
John Paschal, Bishop of Llandaff (1347–1361).
John Smith, Bishop of Llandaff (1476–1478).
Sir David Mathew, (1400–1484), born Dafydd ap Mathew, was Lord of Llandaff and Seneschal of Llandaff Cathedral, and one of the ten Great Barons of Glamorgan, a Marcher Lord. After saving the life of Edward IV at the Battle of Towton in 1461, he was appointed Grand Standard Bearer of England, and the King granted him the use of "Towton" on the Mathew family arms.
John Marshall (bishop), Bishop of Llandaff (1478–1496).
Miles Salley, Bishop of Llandaff (1500–1516/17).
Hugh Lloyd (bishop), Bishop of Llandaff (1660–1667).
Francis Davies, Bishop of Llandaff (1667–1675).
Edward Copleston, Bishop of Llandaff (1828–1849).
Alfred Ollivant, Bishop of Llandaff (1849–1882).
Llandaff Cathedral