Thomas Arthur, comte de Lally, baron de Tollendal, French General of Irish Jacobite ancestry, is born on January 13, 1702. Lally commands French forces in India during the Seven Years’ War, including two battalions of his own red-coated Regiment of Lally of the Irish Brigade.

Lally is born at Romans-sur-Isère, Dauphiné, the son of Sir Gerald Lally, one of the original “Wild Geese” of 1691 and an Irish Jacobite from Tuam, County Galway, who married a French lady of noble family. His title is derived from the Lally’s ancestral home, Castel Tullendally in County Galway where the Lally’s, originally called O’Mullallys, are prominent members of the Gaelic Aristocracy who can trace their ancestry back to the second century High King of Ireland, Conn of the Hundred Battles.

Entering the French army in 1721 he serves in the war of 1734 against Austria. He is present at the Battle of Dettingen in 1743, and commands the regiment de Lally in the famous Irish brigade in the Battle of Fontenoy in May 1745. He is made a brigadier on the field by Louis XV of France.

Lally is a staunch Jacobite and in 1745 accompanies Charles Edward Stuart to Scotland, serving as aide-de-camp at the Battle of Falkirk Muir in January 1746. Escaping to France, he serves with Marshal Maurice de Saxe in the Low Countries. At the Siege of Maastricht in 1748 he is made a maréchal de camp.

When war breaks out with Britain in 1756 Lally is appointed governor-general of French India and commands a French expedition to India, made up of four battalions, two of whom are from his own Regiment of Lally of the Irish Brigade. He reaches Pondicherry in April 1758, and within six weeks has pushed the British back from the coast to Madras, the headquarters of the British East India Company.

He is a man of courage and a capable general, but his pride and ferocity make him unpopular with his officers and men. He is unsuccessful in an attack on Tanjore, and as he lacks French naval support he has to retire from the Siege of Madras in 1758, owing to the timely arrival of the British fleet. He is defeated by Sir Eyre Coote at the Battle of Wandiwash in 1760, and besieged in Pondicherry, where he is forced to capitulate in 1761.

Lally is sent to England as a prisoner of war. Public opinion in France is very hostile, blaming him for the defeat by the British, and there are widespread calls for Lally to be put on trial. While in London, he hears that he is accused of treason in France, and insists, against advice, on returning on parole to stand trial. He is kept prisoner for nearly two years before the trial begins in 1764. When the Advocate General of the Paris Parlement Joseph Omer Joly de Fleury begins the prosecution, Lally has not received any documentation of the charges and is not allowed a defence lawyer. Throughout the trial, which lasts for two years, Lally fights against Joly de Fleury’s charges but on May 6, 1766 he is convicted and sentenced to death.

Lally makes an unsuccessful attempt at suicide in prison after his sentencing. On May 9, 1766, three days after his conviction, he is gagged to prevent him from protesting his innocence further and is transported in a garbage cart to the Place de Grève to be beheaded. The executioner’s first blow only slices open his skull and it takes a second blow to kill him.