This is a list of Swedish queens consort and spouses of Swedish monarchs and regents.
 The list covers a large time span and the role of a consort has changed much over the centuries.
 The first Swedish consorts are spoken of in legends.
 The consorts until c. 1000 are often semi-legendary, as are the monarchs.
 Between the 14th and 16th century, during periods of de facto Swedish independence from the formal union with Denmark, the Swedish regents did not have the title of king or queen, nor did the spouses of kings have the title of queen consort, although they had the equivalent position.
 Due to unions with Finland, Denmark and Norway, many of the Swedish consorts were also consorts of monarchs of these countries.
 Consorts listed during the period of 1380–1520 were in fact also consorts to monarchs of Denmark.
 The consorts listed during the period of 1814-1905 were also consorts to monarchs of Norway.
 Finland was from the Middle Ages a part of Sweden, and although there was no official title, such as "Queen Consort of Finland", from the 16th century until the year of 1809, the queen consort of Sweden also held the title "Grand Princess of Finland."
Denhof - is a Polish coat of arms.
 It was used by several szlachta families in the times of the Polish-Lithuanian Commonwealth.
 Dönhoff (German) or Denhoff (Polish) (sometimes also Denhof or Doenhoff) was a Livonian German noble family, a branch of which moved to the Polish-Lithuanian Commonwealth in the 16th century and became recognized as a Polish noble ("szlachta") there.
The Russo-Polish War of 1654–1667, also called Thirteen Years' War, First Northern War, or the War for Ukraine, was a major conflict between Tsardom of Russia and the Polish-Lithuanian Commonwealth.
 Between 1655 and 1660, the Second Northern War was also fought in the Polish-Lithuanian Commonwealth, thus this period became known in Poland as "The Deluge".
 The Commonwealth initially suffered defeats, but regained its ground and won most of the battles.
 However its plundered economy was not able to fund the long conflict.
 Facing internal crisis and civil war, Poland was forced to sign a truce.
 The war ended with significant Russian territorial gains and marked the beginning of the rise of Russia as a great power in Eastern Europe.
The Battle of Podhajce (October 6–16, 1667) was fought in the town of Podhajce in the Polish-Lithuanian Commonwealth (nowadays Pidhaitsi, western Ukraine), and the area surrounding it as part of the Polish-Tartar War and the Great Turkish War.
 The army of the Polish-Lithuanian Commonwealth under John III Sobieski, totaling around 9,000 men defeated Tatar and Cossack forces under Petro Doroshenko and Adil Giray, which totaled around 35,000 men.
A queen consort is the wife of a reigning king (or an empress consort in the case of an emperor).
 In Brunei, the wife of the Sultan is known as a "Raja Isteri" with prefix "Pengiran Anak", equivalent with queen consort in English, as were the consorts of tsars when Bulgaria was still a monarchy.
 A queen consort usually shares her husband's social rank and status.
 She holds the feminine equivalent of the king's monarchical titles, but historically, she does not share the king's political and military powers.
 A queen regnant is a queen in her own right with all the powers of a monarch, who (usually) has become queen by inheriting the throne upon the death of the previous monarch.
Anne of Brittany (French: "Anne de Bretagne" ; Breton: "Anna Breizh" ) (25/26 January 1477 – 9 January 1514 ) was Duchess of Brittany from 1488 until her death, and queen consort of France from 1491 to 1498 and from 1499 to her death.
 She is the only woman to have been queen consort of France twice.
 During the Italian Wars, Anne also became queen consort of Naples, from 1501 to 1504, and duchess consort of Milan, in 1499–1500 and from 1500 to 1512.
The Warsaw Confederation, signed on January 28, 1573 by the Polish national assembly ("sejm konwokacyjny") in Warsaw, was the first European act granting religious freedoms.
 It was an important development in the history of Poland and Lithuania that extended religious tolerance to nobility and free persons within the Polish-Lithuanian Commonwealth and is considered the formal beginning of religious freedom in the Polish-Lithuanian Commonwealth.
 While it did not prevent all conflict based on religion, it did make the Commonwealth a much safer and more tolerant place than most of contemporaneous Europe, especially during the subsequent Thirty Years' War.
Catherine Opalińska (Polish: "Katarzyna Opalińska" ; 13 October 1680 – 19 March 1747) was Queen consort of the Polish-Lithuanian Commonwealth twice and Duchess consort of Lorraine through her marriage with Stanisław I of Poland.
The szlachta (Polish: "szlachta" , ) was a privileged social class in the Kingdom of Poland.
 The term "szlachta" was also used for the Lithuanian nobility after the union of the Grand Duchy of Lithuania with Poland as the Polish-Lithuanian Commonwealth (Union of Lublin, 1569) and for the increasingly Polonized nobilities of territories controlled by the Polish-Lithuanian Commonwealth, including Ducal Prussia and the Ruthenian lands.
Anna Miełżyńska (about 1600-after 1640) of the Nowina clan was a Polish noble lady, the wife of Remigian Zaleski, Castellan of Łęczyca and the mother of Teresa Zaleska, who was the grandmother of Catherine Opalińska, the Queen consort of King Stanislaus Leszczynski of Poland.
 Her father was Łukasz Miełżyński (about 1560-1628), who was the Castellan of Gniezno (he is referred in some sources as Count).
 Her mother was Elżbieta Czacka (about 1575-after 1612).

Question: Anna Miełżyńska was the great-grandmother of which Queen consort of the Polish-Lithuanian Commonwealth?
Answer: Catherine Opalińska