Sigrid Undset (20 May 1882 – 10 June 1949) was a Norwegian novelist who was awarded the Nobel Prize in Literature in 1928. Undset was born in Kalundborg, Denmark, but her family moved to Norway when she was two years old. In 1924, she converted to Catholicism and became a lay Dominican. She fled Norway for the United States in 1940 because of her opposition to Nazi Germany and the German occupation, but returned after World War II ended in 1945.
Christina, later known as Christina Alexandra and sometimes Countess Dohna, was Queen regnant of Sweden from 1632 to 1654. She was the only surviving legitimate child of King Gustavus Adolphus of Sweden and his wife Maria Eleonora of Brandenburg. As the heiress presumptive, at the age of six she succeeded her father on the throne of Sweden upon his death at the Battle of Lützen in the Thirty Years' War.
Robert Philip Hanssen (born 18 April 1944) is a former American FBI agent who spied for Soviet and Russian intelligence services against the United States for 22 years from 1979 to 2001. He began working for the FBI and then defected to the KGB while continuing to work for the FBI. The codename of the FBI for the spy before they found out it was him was Graysuit.
Frederick Augustus I or Augustus II the Strong was Elector of Saxony (as Frederick Augustus I) and King of Poland and Grand Duke of Lithuania (as Augustus II). Augustus's great physical strength earned him the nicknames "the Strong," "the Saxon Hercules" and "Iron-Hand. " He liked to show that he lived up to his name by breaking horseshoes with his bare hands and engaging in fox tossing with a single finger. His ancestor Cymburgis of Masovia was also noted for her strength.
Lieutenant-General Władysław Anders CB (11 August 1892 – 12 May 1970) was a General in the Polish Army and later in life a politician with the Polish government-in-exile in London. Anders was born on 11 August 1892 to his Baltic-German father Albert Anders and his mother Elizabeth, born Tauchert, in the Polish village of Krośniewice–Błonie, near Kutno which at that time was part of the Russian Empire.
Richard John Neuhaus (May 14, 1936 – January 8, 2009) was a prominent American clergyman and writer. Born in Canada, he moved to the United States, where he had become a naturalized United States citizen.
August Friedrich Gfrörer (1803-1861), German historian, was born at Calw, in Württemberg, 5 March 1803. Obedient to the wishes of his parents, but against his own inclinations, he devoted himself to the study of theology; was a student at the "Little Evangelical Seminary" of Tübingen from 1817-21, and from 1821-25 continued his studies at the higher seminary of the same place.
John Frederick was duke of Brunswick-Lüneburg and ruled over the Calenberg subdivision of the duchy from 1665 until his death. The third son of George, Duke of Brunswick-Lüneburg, John converted to the Roman Catholic Church as the only member of his family in 1651. He received Calenberg when his elder brother George William inherited the Principality of Lüneburg.
Reinhard Hütter or Reinhard Huetter is a formerly Lutheran, now Catholic, theologian who is currently Professor of Christian Theology at Duke Divinity School in Durham, NC. He was born at 1.11.1958 in Lichtenfels (Bavaria, Germany). In December 2004, Hütter was received into the Roman Catholic Communion. Hütter was until the end of the calendar year 2008 the editor of Pro Ecclesia, a journal that is published four times a year by the Center for Catholic and Evangelical Theology.
Veit Erbermann (or Ebermann) (25 May 1597, at Rendweisdorff, in Bavaria – 8 April 1675) was a German theologian and controversialist. He was born of Lutheran parents, but at an early age he became a Roman Catholic, and on 30 May, 1620, entered the Society of Jesus. After completing his ecclesiastical studies he taught philosophy and Scholastic theology, first at Mainz and afterwards at Würzburg.
Blessed Elisabeth Hesselblad, religious name Maria Elisabetta Hesselblad, (June 4, 1870 - April 24, 1957) was a Swedish nurse, nun, and beatified woman. She was the fifth of thirteen children born to August Robert Hesselblad and Cajsa Pettesdotter Dag - a Lutheran family in Fåglavik, Herrljunga Municipality, Sweden. By 1886, she had to work to help them make ends meet. At first she looked for work in Sweden, but eventually sought work in the United States as a nurse.
Wilhelm Volk (25 January 2009 -) was a German author. He used the pseudonym Ludwig Clarus. Volk was born in Halberstadt, Germany. He was a convert from Lutheranism to Catholicism. He was the author of a number of large works on the lives of the Catholic saints, and on Italian and Spanish literature. He died at Erfurt.
Louis Bouyer (1913, Paris – 2004) was a French Lutheran minister who converted to Catholicism in 1939. During his religious career he was a scholar who was relied upon during the Second Vatican Council. He was known for his books on Christian spirituality and its history. He was a co-founder of the international review Communio. He was chosen by the pope to be part of a team to initiate the International Theological Commission in 1969.
Stephan George Kuttner (March 24, 1907 – August 12, 1996), an expert in Canon Law, was recognized as a leader in the discovery, interpretation and analysis of important texts and manuscripts that are key to understanding the evolution of legal systems from Roman law to modern Constitutional law.
Christian August of Saxe-Zeitz (b. Moritzburg, 9 October 1666 - d. Regensburg, 23 August 1725), was a German prince of the House of Wettin. He was the third (but second surviving) son of Maurice, Duke of Saxe-Zeitz, and his second wife, Dorothea Marie of Saxe-Weimar.
Adam Wenceslaus of Cieszyn, was a Duke of Cieszyn since 1579 until his death. He was the second but only surviving son of Wenceslaus III Adam, Duke of Cieszyn, by his second wife Sidonia Katharina, daughter of Francis I, Duke of Saxe-Lauenburg. His older half-brother, Frederick Casimir, only son of Wenceslaus III Adam's first marriage, died a few years before he was born, in 1571.
Frederick William of Cieszyn was a Duke of Cieszyn since 1617 until his death. He was the third but only surviving son of Adam Wenceslaus, Duke of Cieszyn, by his wife Elisabeth, daughter of Gotthard Kettler, Duke of Courland. His mother died from childbirth complications ten days after his birth, on 19 November 1602.
Elizabeth Lucretia, Czech: Alžběta Lukrécie (Těšín), German: Elisabeth Lukretia (Teschen); b. 1 June 1599 - d. 19 May 1653), was a reigning Duchess of Cieszyn since 1625 until her death. She was the third child and second daughter of Adam Wenceslaus, Duke of Cieszyn, by his wife Elisabeth, daughter of Gotthard Kettler, Duke of Courland.
Brita Lucie Collett Paus (3 July 1917 as Brita Lucie Collett – 28 June 1998) was a Norwegian humanitarian leader and the founder of Fransiskushjelpen, a Catholic charitable organisation in Norway. She led the organisation from 1956 until 1993. She converted to Catholicism in 1950, and served as chair of the Laity Council of the Catholic Diocese of Oslo, as board member of Caritas in Norway from 1965 and member of governmental committees.
Matthäus Prätorius (born c. 1635 probably in Memel; died c. 1704 in Weyherststadt) was a Protestant pastor, later a Roman-Catholic priest, a historian and ethnographer. He probably grew up speaking both German language and Lithuanian language, which helped him when preaching to the ethnic Lithuanians in Ducal Prussia. His work about Prussia and its culture, Deliciae Prussicae oder Preussische Schaubühne, resembles the work of Christoph Hartknoch, with whom he collaborated.