sentences:  An early castle (now a ruin in the centre of the village of Delvin) is believed to have been built in 1181 by Hugh de Lacy, Lord of Meath for his brother-in-law, Sir Gilbert de Nugent.Sir Gilbert de Nugent, originally from the Nogent-le-Rotrou area in France, came to Ireland with Hugh de Lacy in 1171.Sir Gilbert was granted the title Baron of Delvin within the Lordship of Meath.