John Trevor ( cy, Ieuan Trefor) (died 1357) was the first man of that name to hold the position of

Bishop of St Asaph The Bishop of St Asaph heads the Church in Wales diocese of St Asaph. The diocese covers the counties of Conwy and Flintshire, Wrexham county borough, the eastern part of Merioneth in Gwynedd and part of northern Powys. The Episcopal seat is loca ...

in north

Wales Wales ( cy, Cymru ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by England to the Wales–England border, east, the Irish Sea to the north and west, the Celtic Sea to the south west and the ...

, from 1346 to 1357. The famous bridge across the River Dee at

Llangollen Llangollen () is a town and community, situated on the River Dee, in Denbighshire, Wales. Its riverside location forms the edge of the Berwyn range, and the Dee Valley section of the Clwydian Range and Dee Valley Area of Outstanding Natural Beau ...

Denbighshire Denbighshire ( ; cy, Sir Ddinbych; ) is a county in the north-east of Wales. Its borders differ from the historic county of the same name. This part of Wales contains the country's oldest known evidence of habitation – Pontnewydd (Bontnewy ...

is reputed to have been built in about 1345 by John Trevor, who was then living at nearby Trefor Hall. His father, Iorwerth ab Adda, is buried at nearby

Valle Crucis Abbey Valle Crucis Abbey (Valley of the Cross) is a Cistercian abbey located in Llantysilio in Denbighshire, Wales. More formally ''the Abbey Church of the Blessed Virgin Mary, Valle Crucis'' it is known in Welsh both as ''Abaty Glyn Egwestl'' and ''A ...

References

* Trevor II, John Trevor II, John 14th-century English Roman Catholic bishops Year of birth unknown {{UK-RC-bishop-stub