Trostrey
St David's Church
Trostrey Location within Monmouthshire
OS grid reference	SO 360 044
Principal area	Monmouthshire
Preserved county	Gwent
Country	Wales
Sovereign state	United Kingdom
Post town	USK
Postcode district	NP15
Dialling code	01291
Police	Gwent
Fire	South Wales
Ambulance	Welsh
UK Parliament	Monmouth
List of places UK Wales Monmouthshire 51°44′03″N 2°55′42″W / 51.73423°N 2.9284°W / 51.73423; -2.9284

Trostrey (Welsh: Trostre) is a small hamlet and parish in Monmouthshire, in southeast Wales located about 2+1⁄2 miles (4.0 km) north/northwest of Usk.

Excavations at the castle in 2000 found evidence of burial cairns from the Neolithic and Bronze Age periods.^[1] An 11th-century earthen motte-and-bailey castle was replaced in the 13th century by a small stone fort.^[2] A manor house, Trostrey Court stands 1⁄2 mile (0.80 km) east of the village.^[2] The Church of St David is dedicated to St David.^[2]

• Newman, John (2000). Gwent/Monmouthshire. The Buildings of Wales. Penguin. ISBN 0-14-071053-1.