Question: Which Holy Roman Emperor did Raphael Sobiehrd-Mnishovsky of Sebuzin and of Horstein serve under?

full_context: Document 1: Ferdinand I, Holy Roman Emperor: Ferdinand I (Spanish: "Fernando I" ) (10 March 1503 – 25 July 1564) was Holy Roman Emperor from 1558, king of Bohemia and Hungary from 1526, and king of Croatia from 1527 until his death. Before his accession, he ruled the Austrian hereditary lands of the Habsburgs in the name of his elder brother, Charles V, Holy Roman Emperor. Also, he often served as Charles' representative in Germany and developed useful relationships with German princes.
Document 2: Maximilian I, Holy Roman Emperor: Maximilian I (22 March 1459 – 12 January 1519) was King of the Romans (also known as King of the Germans) from 1486 and Holy Roman Emperor from 1493 until his death, though he was never crowned by the Pope, as the journey to Rome was always too risky. He was the son of Frederick III, Holy Roman Emperor, and Eleanor of Portugal. He ruled jointly with his father for the last ten years of his father's reign, from c. 1483 to 1493.
Document 3: Royal Secretary: Royal Secretary (Basilikos Grammateus, Secretarius Regius) is a position at the court of a monarch generally responsible for communicating the sovereign's wishes to the other members of government. At times and places it may have a number of other duties. In most cases the royal secretary is a close adviser of the monarch. In some cases the office of Royal Secretary evolved into the Secretary of State.
Document 4: Rudolf, Crown Prince of Austria: Rudolf, Crown Prince of Austria (Rudolf Franz Karl Joseph; 21 August 1858 – 30 January 1889) was the only son of Emperor Franz Joseph I and heir apparent to the throne of Austria-Hungary from birth. In 1889, he died in a suicide pact with his mistress, Baroness Mary Vetsera, at the Mayerling hunting lodge. The ensuing scandal made international headlines. He was named after the first Habsburg King of Germany, Rudolf I, who assumed the throne in 1273.
Document 5: Rudolf II, Holy Roman Emperor: Rudolf II (18 July 1552 – 20 January 1612) was Holy Roman Emperor (1576–1612), King of Hungary and Croatia (as Rudolf I, 1572–1608), King of Bohemia (1575–1608/1611) and Archduke of Austria (1576–1608). He was a member of the House of Habsburg.
Document 6: Stefan Osmokruhović: Stefan Osmokruhović (German: "Stefan Osmokruch" , ; 1665–died in 1666) was the great judge (de. "Grossrichter", sr. "veliki sudac") of the Križevci captainate, who in 1665 led a revolt of the Grenz infantry soldiers in the Varaždin generalate of the Military Frontier against the Austrian officers, after the rights of the frontiersmen had been compromised. A Serb, Osmokruhović held secret meetings in the Slavonian Military Frontier, in which many Serbs took part in. He was also supported by the judges of Koprivnica and Ivanica, Ilija Romanović and Nikola Vuković, and they all sent letters to the Austrian Leopold I, Holy Roman Emperor about the issues in March 1666. Appointed the commander of the Varaždin frontiersmen themselves and named great judge ("Veliki Sudac"), he claimed to answer to no one besides the Austrian Emperor, and sought that the frontiersmen's right to ownership of the land between the Sava and Drava be recognized, among other issues. Austrian lieutenant general Fra Johann Josef Herberstein (1639-1689) went to Križevci and demanded that his candidate be accepted as great judge, but the candidate was murdered by the frontiersmen. The revolt was finally suppressed in 1666 by Herberstein, and Osmokruhović was sentenced to death.
Document 7: Rewani: Rewani, (c.1475 - 1524), "Ilyas Shudja Celebi", was an Ottoman poet. Born in Edirne the son of 'Abd Allah, he was employed by Bayezid II as administrator of the "surre"; money for the poor in the holy cities of Mecca and Medina. After being accused of embezzling, he was promptly dismissed. He found service with Prince Selim, Bayezid's son, in Trabzon Province. Yet again, he fell into disfavor through some indiscretion, but was forgiven by Prince Selim. Following Selim's overthrow of Bayezid II, Rewani became superintendent of the kitchen("matbakh emini") and later entrusted with the administration of the Hagia Sofia. Yet, during his lifetime, Rewani was accused of peculation and plagiarism.
Document 8: Raphael Sobiehrd-Mnishovsky: Raphael Sobiehrd-Mnishovsky of Sebuzin and of Horstein (1580 – 21 November 1644) was a Bohemian lawyer and writer, who held various secretarial, diplomatic, and judicial posts under Rudolf II, Mathias, Ferdinand II, and Ferdinand III, under whom Raphael was the attorney-general.
Document 9: Ferdinand III, Holy Roman Emperor: Ferdinand III (13 July 1608 – 2 April 1657) was Holy Roman Emperor from 15 February 1637 until his death, as well as King of Hungary and Croatia, King of Bohemia and Archduke of Austria. He was the last emperor to have real power over the Holy Roman Empire.
Document 10: Wenzel Anton, Prince of Kaunitz-Rietberg: Wenzel Anton, Prince von Kaunitz-Rietberg (German: "Wenzel Anton Fürst von Kaunitz-Rietberg" , ; 2 February 1711 – 27 June 1794) was an Austrian and Czech diplomat and statesman in the Habsburg Monarchy. A proponent of enlightened absolutism, he held the office of State Chancellor for about four decades, responsible for the foreign policies under the reign of Maria Theresa, Joseph II, and Leopold II. In 1764 he was elevated to the noble rank of a Prince of the Holy Roman Empire ("Reichfürst").
Document 11: Raphael: Raffaello Sanzio da Urbino (] ; March 28 or April 6, 1483April 6, 1520), known as Raphael ( , ), was an Italian painter and architect of the High Renaissance. His work is admired for its clarity of form, ease of composition, and visual achievement of the Neoplatonic ideal of human grandeur. Together with Michelangelo and Leonardo da Vinci, he forms the traditional trinity of great masters of that period.
Document 12: Leopold I, Holy Roman Emperor: Leopold I (name in full: "Leopold Ignaz Joseph Balthasar Felician"; Hungarian: "I. Lipót" ; 9 June 1640 – 5 May 1705) was Holy Roman Emperor, King of Hungary, Croatia, and Bohemia. The second son of Ferdinand III, Holy Roman Emperor, by his first wife, Maria Anna of Spain, Leopold became heir apparent in 1654 by the death of his elder brother Ferdinand IV. Elected in 1658, Leopold ruled the Holy Roman Empire until his death in 1705.
Document 13: Haim Raphael HaLevi ben Aaron of Staroselye: Haim Raphael HaLevi ben Aaron of Staroselye (d. 1842) was the second and last rebbe of the Strashelye movement, an extinct branch of the Chabad school of Hasidic Judaism. The branch is named Strashelye after the town in the Mohilev Province of present-day Belarus where its leader lived. Like all Hasidim it is based on the teachings and customs of "Chasidut" as taught by the Baal Shem Tov, in turn based on the Kabbalistic works of Rabbi Isaac Luria (also known as the "Arizal"). Rabbi Haim's father was Aaron HaLevi ben Moses of Staroselye, a disciple of Rabbi Shneur Zalman of Liadi and a friend of Rabbi Dovber Schneuri.
Document 14: Philipp Ludwig Wenzel von Sinzendorf: Philipp Ludwig Wenzel Sinzendorf (26 December 1671 – 8 February 1742) was an Austrian diplomat and statesman who for nearly four decades served as Court Chancellor responsible of foreign affairs of the Habsburg Monarchy.
Document 15: House of Habsburg: The House of Habsburg ( ; ] ), also called House of Austria, was one of the most influential and outstanding royal houses of Europe. The throne of the Holy Roman Empire was continuously occupied by the Habsburgs between 1438 and 1740. The house also produced emperors and kings of the Kingdom of Bohemia, Kingdom of England ("Jure uxoris" King), Kingdom of Germany, Kingdom of Hungary, Kingdom of Croatia, Second Mexican Empire, Kingdom of Ireland ("Jure uxoris" King), Kingdom of Portugal, and Spain, as well as rulers of several Dutch and Italian principalities. From the 16th century, following the reign of Charles V, the dynasty was split between its Austrian and Spanish branches. Although they ruled distinct territories, they nevertheless maintained close relations and frequently intermarried.
ground_truth: Rudolf II