Blessed Maria Adeodata Pisani, OSB (29 December 1806 – 25 February 1855) was a Maltese nun whom Pope John Paul II venerated 24 April 2001 (decree of heroic virtues) and beatified 9 May 2001.The day after John Paul II signed and released the decree on both her virtues and miracle, paving the path for the beatification 9 May 2001, the bishops released a pastoral letter emphasizing the serious difficulties that she had to face, stating that Maria Adeodata had had "a difficult childhood as her parents did not live together.