Home /calendar /september /September 12, 1315On September 12, 1315 in Celtic HistoryThomas dun, a privateer from scotland, sailed into holyhead, captured an english ship and over ran anglesay.Share : More From This Daycalendar 1919Dáil Éireann is declared illegalSeptember 12, 1919calendar 1907Louis McNeice, poet and classical scholar is born in BelfastSeptember 12, 1907calendar 1848Death of William McNab, curator of the Royal Botanic Garden Edinburgh. He was responsible for greening Scotland in the, 19th century. He moved, 4,000 plant species, including trees from a site on Leith Walk, to the present garden at Inverleith.September 12, 1848calendar 1798Rebels attack Castlebar and are repulsedSeptember 12, 1798calendar 1715Battle of Sheriffmuir, ScotlandSeptember 12, 1715calendar 1715Jacobites defeated government forces at Battle of Sheriffmuir.September 12, 1715calendar 1653Ireland and Scotland are represented by six and five members respectively in the Barebones parliament which is in effect from 4 July to this dateSeptember 12, 1653