Papal nobility in the context of "Ennoblement"

The House of Colonna is a prominent Italian family, forming part of the papal nobility. It played a pivotal role in medieval and Renaissance Rome, supplying one pope (Martin V), 23 cardinals and many other church and political leaders. Other notable family members are Vittoria Colonna, close friend of Michelangelo, Marcantonio II Colonna (Marcantonio Colonna), leader of the papal fleet in the Battle of Lepanto (1571) and Costanza Colonna, patron and protector of Caravaggio. The family was notable for its bitter feud with the Orsini family over their influence in Rome, which was eventually settled by the issuing of the papal bull Pax Romana by Pope Julius II in 1511. In 1571, the heads of both families married nieces of Pope Sixtus V. Thereafter, historians recorded that "no peace had been concluded between the princes of Christendom, in which they had not been included by name". Today, the family is led by Don Prospero Colonna (b.1956).

Rose Elizabeth Fitzgerald Kennedy (July 22, 1890 – January 22, 1995) was an American philanthropist, socialite, and matriarch of the Kennedy family. She was deeply embedded in the "lace curtain" Irish-American community in Boston. Her father, John F. Fitzgerald, served in the Massachusetts State Senate (1892–1894), in the U.S. House of Representatives (1895–1901, 1919), and as Mayor of Boston (1906–1908, 1910–1914). Her husband, Joseph P. Kennedy Sr., chaired the U.S. Securities and Exchange Commission (1934–1935) and the U.S. Maritime Commission (1937–1938), and served as United States Ambassador to the United Kingdom (1938–1940). Their nine children included United States President John F. Kennedy, U.S. Senator Robert F. Kennedy of New York, U.S. Senator Ted Kennedy of Massachusetts, Special Olympics founder Eunice Kennedy Shriver, and U.S. Ambassador to Ireland Jean Kennedy Smith. In 1951, Rose Kennedy was ennobled by Pope Pius XII, becoming the sixth American woman to be granted the rank of Papal countess.