| 1845 | Sept 9 | Arrival of the potato blight phytophthora infestans in Ireland |
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| Oct 31 | Establishment of the Mansion House Committee to examine the extent of the damage |
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| Nov 9 | Prime minister Peel orders that £100,000 of Indian corn be purchased in the USA and shipped to Ireland |
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| 1846 | Jan 17 | Daniel O’Connell speaks passionately in the House of Commons on the need for food relief in Ireland to avert a calamity |
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| Mar 5 | Public Works (Ireland) Act passed, enabling county relief works |
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| 28 | Sale of food distributed by the Relief Committee begins |
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| Jun 26 | The Importation of Corn Act, promoted by Peel, almost completely abolishes duties on corn and cereal products (‘abolition of the Corn Laws’) |
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| 29 | Peel’s Government falls on the Coercion Bill, introduced to suppress ‘outrages’ in Ireland |
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| 30 | Lord John Russell appointed Prime Minister |
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| Jul 14 | Potato blight recurs with disastrous consequences |
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| Aug 1 | Charles Edward Trevelyan outlines his plans to meet the coming food crisis |
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| Sept 28 | A crowd attempts to hold up a ship laden with oats for export |
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| Nov | Beggary, roadside deaths, typhus, relapsing fever, dysentery, mass evictions, rising crime and disorder become common |
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| | A bitterly cold winter sets in |
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| 13 | A meeting of Irish Quakers in Dublin sets up the Central Relief Committee of the Society of Friends |
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| Dec | 100,000 persons in the workhouses |
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| 28 | Trevelyan instructs that depots are to be opened in the West for the sale of food |
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| 1847 | Jan 25 | Lord John Russell proposes to the House of Commons to open soup kitchens in place of public works for the relief of distress in Ireland and to permit outdoor relief to be paid for from the local rates |
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| 26 | Duties on the importation of corn suspended until 1 Sept. 1847 |
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| Feb 26 | The Destitute Poor (Ireland) Act (‘the Soup Kitchen Act’) |
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| Mar | 700,000 persons on public works, directly or indirectly supporting three millions |
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| Jun 8 | The Poor Relief (Ireland) Act. Boards of Guardians are empowered to grant outdoor relief to aged, infirm, and sick poor; to poor widows with two or more dependent children; to give food to the able-bodied poor for limited periods, but those holding more than a quarter acre of land are excluded (the Gregory clause) |
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| Jul | Potato harvest healthy, yields good but, since a low acreage had been planted, gross returns were seriously down |
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| | Over three million meals supplied by the Government soup kitchens, that is, over one-third of the population depended on them |
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| Oct 1 | The ending of the Government soup kitchens, though famine conditions were to continue for another four to five years |
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| Nov 29 | The Crime and Outrage (Ireland) Bill introduced into the House of Commons |
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| Dec 20 | The Crime and Outrage (Ireland) Act increases police numbers, extends police powers, and controls the possession of firearms. Results in 15,000 troops being sent to Ireland |
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| 1848 | May 27 | John Mitchel convicted under the Treason Felony Act and sentenced to transportation for fourteen years |
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| Jul | Failure of the potato crop due to a return of the blight |
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| 29 | Affray at Ballingarry, Co. Tipperary, led by William Smith O’Brien, Terence Bellew McManus, James Stephens and others |
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| 1849 | May | The potato blight reappears |
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| Jul 28 | Encumbered Estates Act providing for the setting up an Encumbered Estates Court and allowing the sale of entailed and bankrupt landlords’ estates |
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