June 18

Fianna Fáil maintains links with the IRA until 1934 and then, on this date, declares them to be an illegal organisation.

Playwright, Denis Johnston is born in Dublin

Denis Johnston – Playwright and Chronicler of Irish Life

Death of William Smith O’Brien, leading member of the literary-political Young Ireland movement

Birth of artist, Walter Osborne in Dublin.

Walter Osborne, renowned Irish artist, is born in Dublin on June 17, 1859. Celebrated for his sensitive depictions of everyday life, he is especially admired for his paintings of young girls at play, which remain among the most cherished works in the National Gallery of Ireland. Notable pieces such as The Doll’s School and The House Builders showcase his talent for natural light, domestic intimacy, and social realism, securing his place as a key figure in late 19th-century Irish art.

In the tithe war, yeomen kill up to 14 people at Newtownbarry, Co. Wexford

Battle of Waterloo

Battle of Waterloo — On June 18, 1815, British-led forces under the command of the Duke of Wellington, who was born in Dublin, achieve a decisive victory over Napoleon Bonaparte’s army near Waterloo, in present-day Belgium. The battle marks the end of the Napoleonic Wars and reshapes the political landscape of Europe.

Ensign Ewart captured the French Ensign at the Battle of Waterloo.

In Leinster, the Rebels are defeated at Ovidstown, near Kilcock

n Leinster, the rebels are defeated at Ovidstown, near Kilcock.

Robert Stewart, Viscount Castlereagh, 2nd Marquess of Londonderry, politician and administrator, is born in Dublin

Prince Charles Edward Stuart and persuaded him to wear womens clothes as part of the escape plan.

Flora MacDonald meets Prince Charles Edward Stuart (Bonnie Prince Charlie) in the Outer Hebrides and becomes a key figure in his dramatic escape following the defeat at Culloden in 1746.