|Welsh: Llandeilo Gresynni|
Church of St Teilo
Llantilio Crossenny shown within Monmouthshire
|OS grid reference|
|Sovereign state||United Kingdom|
Llantilio Crossenny (Welsh: Llandeilo Gresynni) is a small village in Monmouthshire, south east Wales, in the United Kingdom. It is situated between the two towns of Abergavenny and Monmouth on the B4233 road.
The village is known for its annual Festival of Music and Drama held every summer; the Church of St Teilo, which dates from the 13th century and is best described as a 'baby cathedral' due to its large size and tall pointed spire, and that it contains a Green Man figure above an aisle; and White Castle (Wales) a fine example of the medieval castle builders art which stands on the hill overlooking the village. The Three Castles Walk passes close by.
The site of the village or at least the locality is associated with a battle between a Dark Ages King of the Welsh Kingdom of Gwent, Ynyr, and the incoming Saxons. The village is also associated with the incoming Normans in Wales who built many castles in this border area of the Welsh Marches and Dafydd Gam, a local warrior and Welsh ally of King Henry V.
A Free Grammar School was founded in the village, on 10 August 1654, by James Powell, Gentleman of Cymmerau. In 1924 a history of the grammar school was published by local historian Sir Joseph Bradney.
- Sir Henry Jackson, 2nd Baronet (1831–1881) Member of Parliament (MP) for Coventry from 1867–1868 and 1874–1881, and a Deputy Lieutenant of Monmouthshire who lived at Llantilio Court from 1873 until his death in 1881.
- Picture of church
- Bradney, J. A. (1924) A History of the Free Grammar School in the Parish of Llantilio-Crosseny in the County of Monmouh Mitchell Hughes and Clarke
- "LLANCROSFEST". llantiliofestival.co.uk/. Retrieved 26 June 2013.
- Nigel Jarrett (12 June 2009). "Centenary of Monmouthshire composer marked". southwalesargus.co.uk. Retrieved 26 June 2013.