Question: Who was the court painter of the Queen that was also the Grand Duchess of Lithuania from 1575-1586?

Context paragraphs:
Jacob Huysmans: Jacob Huysmans (c. 1633–1696) was a Flemish portrait painter who, after training in his native Antwerp, immigrated to England before the Restoration.  He became a feted court painter and attracted the patronage of the Portuguese born queen Catherine of Braganza, a Catholic like himself, of whom he painted several portraits.  With his exuberant style, he was during his lifetime regarded as an important rival of the court painter Peter Lely who favored a more sober treatment of his sitters.

Martin Kober: Martin Kober (also "Chober, Cober, Coeber, Khober, Koeber, Koebner", Polish: "Marcin Kober" ) (ca. 1550 – before 1598) was a portrait painter and court painter to different Central European monarchs - King Stephen Báthory, Rudolf II, Holy Roman Emperor, Queen Anna Jagiellon and King Sigismund III Vasa, active mainly in the Polish–Lithuanian Commonwealth.

Michelle Anches: Michelle Anches (?  - 1926) was a woman who claimed to be the Grand Duchess Tatiana Nikolaevna of Russia.  In 1925, Anches headed to Denmark to meet with Grand Duchess Tatiana's grandmother, Maria Feodorovna.  But Michelle was killed in her house, so she never met her alleged grandmother.  There are still unknown details about her death.  Michelle Anches was considered very similar to the Grand Duchess Tatiana Nikolaevna of Russia.

Sofonisba Anguissola: Sofonisba Anguissola (c. 1532  – 16 November 1625), also known as Sophonisba Angussola or Anguisciola, was an Italian Renaissance painter born in Cremona to a relatively poor noble family.  She received a well-rounded education, that included the fine arts, and her apprenticeship with local painters set a precedent for women to be accepted as students of art.  As a young woman, Anguissola traveled to Rome where she was introduced to Michelangelo, who immediately recognized her talent, and to Milan, where she painted the Duke of Alba.  The Spanish queen Elizabeth of Valois was a keen amateur painter, and in 1559 Anguissola was recruited to go to Madrid as her tutor, with the rank of lady-in-waiting.  She later became an official court painter to the king, Philip II, and adapted her style to the more formal requirements of official portraits for the Spanish court.  After the queen's death, Philip helped arrange an aristocratic marriage for her.  She moved to Sicily, and later Pisa and Genoa, where she continued to practice as a leading portrait painter, living to the age of ninety-three.

Helena of Moscow: Helena Ivanovna of Moscow (Russian: Елена Ивановна ; Lithuanian: "Elena" ; Polish: "Helena Moskiewska" ; 19 May 1476 – 20 January 1513) was daughter of Ivan III the Great, Grand Prince of Moscow, and an uncrowned Grand Duchess of Lithuania and Queen of Poland as she would not convert from Eastern Orthodoxy to Catholicism.  Her childless marriage to Grand Duke of Lithuania and later King of Poland Alexander Jagiellon was a constant source of tension between the Grand Duchy of Moscow and the Grand Duchy of Lithuania.  Instead of guaranteeing peace, Helena's marriage gave her father Ivan III an excuse to interfere in Lithuanian affairs accusing Alexander of mistreating Helena and repressing Orthodox believers.  This became the pretext to renew the Muscovite–Lithuanian War in 1500.  The war ended with a six-year truce in 1503; the Grand Duchy of Lithuania lost about a third of its territory.  Despite political tensions and religious differences, the marriage was a loving one and the royal couple was close.  After her husband's death in 1506, Helena wanted to return to Moscow but was not allowed.  When she planned to run away, she was arrested and reportedly poisoned.

Tosa Mitsusuke: Tosa Mitsusuke (土佐光祐 , 1675–1710) was a Japanese artist in the middle period of the Edo era.  He was the 18th head of the Tosa school.  Painters that belonged to the Tosa were good at painting in the Yamato-e style.  Successive heads of the Tosa served the Emperors as "edokoro-azukari" (Official court painter).  His father was Tosa Mitsunari.  In 1696, he succeeded his father's occupation and became an official court painter.  In 1709, he did paintings of room partitions in the royal palace and in the Sento palace with Kano Tsunenobu.  He died in 1710 at the age of 36.

Anna Jagiellon: Anna Jagiellon (Polish: "Anna Jagiellonka" , Lithuanian: "Ona Jogailaitė" ; 18 October 1523 – 12 November 1596) was Queen of Poland and Grand Duchess of Lithuania in her own right from 1575 to 1586.  She was a daughter of Polish King Sigismund I the Old and his Italian wife Bona Sforza.  Despite multiple proposals, she remained unmarried until the age of 52.  After the death of King Sigismund II Augustus, her brother and the last male member of the Jagiellon dynasty, Anna's hand was sought by pretenders to the Polish–Lithuanian throne to maintain the dynastic tradition.  She was elected, along with her then-fiancé Stephen Báthory, as co-ruler in the 1576 royal election of the Polish–Lithuanian Commonwealth.  Their marriage was a formal arrangement and distant.  Báthory was preoccupied with the Livonian War, while Anna spent her time in Warsaw on local administrative matters and several construction works.  After Báthory's death in December 1586, she had an opportunity to claim the throne for herself (she was co-ruler and not merely a consort), but did not even attempt it.  Instead, she promoted her nephew Sigismund III Vasa, establishing House of Vasa on the Polish–Lithuanian throne for the next eighty years (1587–1668).

Godfrey Kneller: Sir Godfrey Kneller, 1st Baronet (born Gottfried Kniller; 8 August 1646 – 19 October 1723) was the leading portrait painter in England during the late 17th and early 18th centuries, and was court painter to English and British monarchs from Charles II to George I.  His major works include "The Chinese Convert" (1687; Royal Collection, London); a series of four portraits of Isaac Newton painted at various junctures of the latter's life; a series of ten reigning European monarchs, including King Louis XIV of France; over 40 "Kit-cat portraits" of members of the Kit-Cat Club; and ten "beauties" of the court of William III, to match a similar series of ten beauties of the court of Charles II painted by his predecessor as court painter, Sir Peter Lely.

Lucrina Fetti: Lucrina Fetti (c. 1590–1651) was an Italian painter born in Rome under the name "Giustina" She was the daughter of a lesser-known painter, Pietro Fetti, and the sister and pupil of the more distinguished painter of the family, Domenico Fetti.  She accompanied her family to Mantua when her brother was invited to be court painter to Ferdinando Gonzaga, Duke of Mantua.  On December 3, 1614, Duke Ferdinando exclusively gave Giustina a dowry of 150 "scudi" so she could become a Clarissan nun in the Convent of St. Ursula.  Once she entered the convent, she chose to change her name to "Lucrina".  She was known for her religious works from her family's workshop.  They were mostly meant for decorations for the church and convent that were sponsored by Margherita Gonzaga, Duchess of Ferrara.  She was also known for doing portraits of the women of the Gonzaga family.

Marie-Adélaïde, Grand Duchess of Luxembourg: Marie-Adélaïde (Marie Adelheid Thérèse Hilda Wilhelmine; 14 June 1894 – 24 January 1924), reigned as Grand Duchess of Luxembourg from 1912 until her abdication in 1919.  She was the first Grand Duchess regnant of Luxembourg (after five grand dukes), its first female monarch since Duchess Maria Theresa (1740–1780, who was also Austrian Empress) and the first Luxembourgish monarch to be born within the territory since Count John the Blind (1296–1346).

Supporting paragraphs: Martin Kober Anna Jagiellon
Answer: Martin Kober