Trim Castle in the context of "River Boyne"

The history of Ireland from 1169–1536 covers the period from the arrival of the Cambro-Normans to the reign of Henry VIII of England, who made himself King of Ireland. After the Norman invasion of 1169–1171, Ireland was under an alternating level of control from Norman lords and the King of England. Previously, Ireland had seen intermittent warfare between provincial kingdoms over the position of High King. This situation was transformed by intervention in these conflicts by Norman mercenaries and later the English crown. After their successful conquest of England, the Normans turned their attention to Ireland. Ireland was made a lordship of the King of England and much of its land was seized by Norman barons. With time, Hiberno-Norman rule shrank to a territory known as the Pale, stretching from Dublin to Dundalk. The Hiberno-Norman lords elsewhere in the country became Gaelicised and integrated in Gaelic society.

Trim (Irish: Baile Átha Troim, meaning 'town at the ford of elderflowers') is a town in County Meath, Ireland. It is situated on the River Boyne and, as of the 2022 census, had a population of 9,563. The town is in a civil parish of the same name.

The town is noted for Trim Castle – the largest Norman castle in Ireland. One of the two cathedrals of the United Dioceses of Meath and Kildare – St Patrick's cathedral – is located north of the river. Trim won the Irish Tidy Towns Competition in 1972, 1984, 2014 and 2022, and was the joint winner with Ballyconnell in 1974. Trim was historically the county town of Meath, but this title was passed on in 1898 to the larger, neighbouring, town of Navan.