Mountjoy Castle is a ruined fortification situated near the village of Brockagh, in Magheralamfield townland in County Tyrone, Northern Ireland, on a hill overlooking Lough Neagh.
The castle played a role in the Irish Rebellion of 1641 when it was captured by the forces of Felim O'Neill of Kinard under the command of Turlough Gruama O'Quinn.
[1] The castle is a State Care Historic Monument in the Dungannon and South Tyrone Borough Council area, at grid ref: H9015 6870.
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