December 12, 1831Foundation Day; Profession of Catherine McAuley, Mary Ann Doyle and Elizabeth Harley
December 13, 1979Reception of first Honduran Sisters, San Pedro - Sula, Honduras
December 14, 1874Death in Bermondsey of Foundress M Clare Moore
December 15, 1981Establishment of Institute of Sisters of Mercy of Australia (ISMA) - First President, Dorothy Campion
December 15, 1915Opening of Mercy Hospital, Mason City
December 15, 1902Sisters began work in Corofin Workhouse, Co Clare
December 15, 1840M Rose Lynch professed, Baggot St
December 16, 1985Opening of Mercy Hospice Care, Melbourne - Margaret Ryan
December 16, 1977Opening of Mercy Family Centre, Waitara, Sydney
December 17, 1939Opening of convent at Sans Souci, New South Wales from Broken Hill
December 18, 1883Foundation to Clonmel from Cahir, Co Tipperary - M Bernard Vaughan
December 19, 1914Death of M Liguori Keenan at Carysfort, which she had purchased, Co Dublin
December 20, 1859M Agnes O'Connor, Foundress died, New York
December 21, 1843Foundation to Pittsburgh from Carlow M Frances Warde
December 24, 1965Mission to Santiago, Chile from Rochester, New York
December 25, 1866Death of M Teresa Kelly, Foundress of Wexford
December 25, 1865Death of M Vincent Mostyn, Buenos Aires, Argentina
December 25, 1827First mass in House of Mercy, Baggot St, Fr L'Estrange
December 27, 1840Foundation to Birr from Baggot St - M Aloysius Scott
December 27, 1850Death of M Vincent Egan, first to enter in Birr
December 28, 1949Foundation to Glen Davis, New South Wales from Bathurst - M Kevin Muller
December 29, 1847M Anastasia McGauley (first to take 4th vow) died, Pittsburgh
December 29, 1875Foundation to Yass, New South Wales from Rochfortbridge - M Paul Fielding
December 30, 1943Goulburn Sisters open 'Mercedes' in North Sydney - M Agnes Scott

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