The ancient _Conovium_, for some time the station of the Tenth Roman Legion, was no doubt at Caer Rhun, about five miles up the River, and near the Parish Church of that name; as a Roman Hypocaust, a small Shield, and a great number of Roman Coins were discovered there, by the late Rev. Hugh Davies Griffith, late Vicar of the Parish, a gentleman of great worth and integrity, highly esteemed and respected in his neighbourhood, and a person who had a great taste for the study of Antiquities. And what renders this conjecture more probable is this, that there is a hill not far distant, which is still called Mynydd Caer Lleon, or the Hill of the Legion. The Rev. W. Brickdale, at that time Rector of Llanrwst, saw several Roman bricks, dug up near the Church of Caer Rhun, which were inscribed LEG. X. This Legion was denominated Antoniana Augusta. The XXth, stationed at Chester, (CAER LLEON GAWR, or CAER LLEION AR DDYFRDWY) was distinguished by the name VICESSIMA VICTRIX, and the Second Legion, stationed at CAER LEON, in Monmouthshire, or CAER LLEON AR WYSC, was known by the title of AUGUSTA BRITANNICA. And there was (no doubt) a Roman Road from hence to Segontium on the West, and to Varium or Bodvarri and Caerwys, on the East, and another probably through Dolyddelen, to Sarn Helen and Tommen y Mur, in Merionethshire; Pen y street, Dolgelley; Castell y Beri, near Tal y Llynn, to Penal near Machynlleth, where there was a Roman encampment, and where very considerable remains were discovered.