1 September 1789
Marguerite Gardiner, Countess of Blessington, was born Margaret Power in Knockbrit
, near Clonmel
2 March 1822
One of four parts of Marguerite Blessington's first publication, The Magic Lantern; or, Sketches of Scenes in the Metropolis
, appeared anonymously in the Literary Gazette
Marguerite Blessington's financial difficulties propelled her into incessant activity as an editor of and contributor to magazines and annuals.
February 1834 Conversations of Lord Byron with the Countess of Blessington
appeared in volume form.
4 June 1849
Marguerite Gardiner, Countess of Blessington, died of heart disease in Paris
, where she had lived for only a couple of months.
By 5 January 1850
Marguerite, Countess of Blessington's Country Quarters. A Novel
was published posthumously with a memoir of the author by her niece M. A. Power