Title: Wenceslaus I, Duke of Bohemia
Content:  Wenceslaus was the son of Vratislaus I, Duke of Bohemia from the Přemyslid dynasty. His grandfather, Bořivoj I of Bohemia, was converted to Christianity by Cyril and Methodius. His mother, Drahomíra, was the daughter of a pagan tribal chief of the Havelli, but was baptized at the time of her marriage. His paternal grandmother, Ludmila of Bohemia, saw to it that he was educated in the Old Slavonic language and, at an early age, Wenceslaus was sent to the college at Budeč. In 921, when Wenceslaus was about thirteen, his father died and his grandmother became regent. Jealous of the influence that Ludmila wielded over Wenceslaus, 
Title: Wenceslaus II of Bohemia
Content:  Wenceslaus II Přemyslid (Václav II.; Wacław II Czeski; 27 September 1271 &ndash; 21 June 1305) was King of Bohemia (1278–1305), Duke of Cracow (1291–1305), and King of Poland (1300–1305). He was the only son of King Ottokar II of Bohemia and Ottokar's second wife Kunigunda. He was born in 1271, ten years after the marriage of his parents. Kunigunda was the daughter of Rostislav Mikhailovich, lord of Slavonia, son of a Grand Prince of Kiev, and Anna of Hungary, daughter of Béla IV of Hungary. His great-grandfather was the German king Philip of Swabia. Wenceslaus II was the grandfather of the Holy Roman Emperor, Charles IV. He was a member of the Přemyslid dynasty.
Title: Wenceslaus IV of Bohemia
Content:  Wenceslaus was born in the Imperial city of Nuremberg, the son of Emperor Charles IV by his third wife Anna von Schweidnitz, a scion of the Silesian Piasts, and baptized at St. Sebaldus Church. He was raised by the Prague Archbishops Arnošt of Pardubice and Jan Očko of Vlašim. His father had the two-year-old crowned King of Bohemia in June 1363 and in 1373 also obtained for him the Electoral Margraviate of Brandenburg. When on 10 June 1376 Charles IV asserted Wenceslaus' election as King of the Romans by the prince-electors, two of seven votes, those of Brandenburg and Bohemia, were held by the emperor and his son themselves. Wenceslaus was crowned at Aix-la-Chapelle on 6 July. In order to secure 
Title: Wenceslaus IV of Bohemia
Content:  Wenceslaus was married twice, first to Joanna of Bavaria, a scion of the Wittelsbach dynasty, on 29 September 1370. Following her death on 31 December 1386 (according to an unproven legend "mangled by one of Wenceslaus' beloved deer-hounds"), he married her first cousin once removed, Sofia of Bavaria, on 2 May 1389. He had no children by either wife. Wenceslaus was described as a man of great knowledge and is known for the Wenceslas Bible, a richly illuminated manuscript he had drawn up between 1390 and 1400. However, his rule remained uncertain, varying between idleness and cruel measures as in the case of John of Nepomuk. Unlike his father, Wenceslaus relied on favouritism, which made 
Title: Wenceslaus III of Bohemia
Content:  He was the second son of Wenceslaus II, King of Bohemia and Wenceslaus II's wife, Judith of Habsburg. He was born in Prague on 6 October 1289. His elder brother died before his birth and he was the only son of his parents to survive infancy. Wenceslaus was still a child when his mother, Judith, died on 18 June 1297. He was betrothed to Elizabeth of Hungary on 12 February 1298. She was the only child of Andrew III of Hungary. Andrew III was the last male member of the House of Árpád, the native royal dynasty of Hungary, but the legitimacy of his rule had not been unanimously acknowledged. Wenceslaus's father occupied Greater Poland, Kujavia and other regions of Poland in early 1300. After his main opponent, Władysław the Elbow-high, was forced to leave the kingdom, Wenceslaus II was crowned king of Poland in Gniezno in late September 1300. However, Pope Boniface VIII refused to confirm Wenceslaus II's position in Poland.
Title: Wenceslaus IV of Bohemia
Content:  Wenceslaus IV (also Wenceslas; Václav; Wenzel, nicknamed "the Idle"; 26 February 1361 – 16 August 1419), also known as Wenceslaus of Luxembourg, was King of Bohemia from 1378 until his death and King of Germany from 1376 until he was deposed in 1400. As he belonged to the House of Luxembourg, he was also Duke of Luxembourg from 1383 to 1388.
Title: Wenceslaus I of Bohemia
Content: Vladislaus III of Moravia (c. 1228 – 3 January 1247) ; Ottokar II of Bohemia (c. 1230 – 26 August 1278) ; Beatrice (c. 1231 – 27 May 1290), who married Otto III of Brandenburg ; Agnes (died 10 August 1268), who married Henry III of Meissen ; A daughter who died young In 1224, Wenceslaus married Kunigunde of Hohenstaufen, third daughter of Philip of Swabia, King of Germany, and his wife Irene Angelina. Wenceslaus encouraged large numbers of Germans to settle in the villages and towns in Bohemia and Moravia. Stone buildings began to replace wooden ones in Prague as a result of the influence of the new settlers. Wenceslaus and Kunigunde had five known children: 
Title: Wenceslaus II of Bohemia
Content:  In 1276 Rudolf I, King of the Romans, placed Ottokar under the ban of the empire and besieged Vienna. This compelled Ottokar in November 1276 to sign a new treaty by which he gave up all claims to Austria and the neighbouring duchies, retaining for himself only Bohemia and Moravia. Ottokar's son Wenceslaus was also betrothed to Rudolph's daughter Judith. It was an uneasy peace. Wenceslaus's father died on 26 August 1278 in the Battle on the Marchfeld shortly before Wenceslaus' seventh birthday. Before Wenceslaus became of age, the government was handled by Otto V, Margrave of Brandenburg, who is said to have held Wenceslaus captive in several locations. He returned to Bohemia in 1283, at the age of twelve. His mother's second husband, Záviš of Falkenštejn, ruled instead of him for a few years. On 24 January 1285, Wenceslaus married Judith of Habsburg, daughter of Rudolf I, to whom he had been betrothed since 1276. In 1290, Wenceslaus had Záviš beheaded for alleged treason and began ruling independently.
Title: Wenceslaus I of Bohemia
Content:  a Duchy on 17 September 1156, allowed for the female line of the House of Babenberg to succeed to the throne. Gertrude, Duchess of Austria, niece of the late Frederick II, thus was able to claim the Duchy in her own right. Wenceslaus arranged for her marriage to his eldest son, Vladislaus, Margrave of Moravia. Vladislaus was declared a jure uxoris Duke of Austria and managed to secure the support of part of the Austrian nobility. On 3 January 1247, Vladislaus died suddenly and the initial plan of Wenceslaus was negated. Gertrude continued her claim and proceeded to marry Herman VI, Margrave of Baden.
Title: Wenceslaus II, Duke of Opava-Ratibor
Content:  His parents were John II "the Iron" and his wife Helen of Lithuania, a niece of King Jogaila of Poland. Wenceslaus fought together with his father and other Silesian princes on the Polish side against the Teutonic Knights in the Hunger War in 1414. Although Wenceslaus and his older brother Nicholas V were probably already adults when their father died in 1424, their mother, Helen of Lithuania, acted as regent until 1428. From 1428 to 1449, she styled herself as Lady of Pleß; presumably Pleß was her Wittum. From 1428 to 1437, Wenceslaus and Nicholas V ruled their territory jointly. In 1437, it was divided, with Wenceslaus taking Ratibor and Nicholas taking Duchy of Krnov, Bruntál, Rybnik, Pleß and Baborów. In late 1437, a majority of the Bohemian Estates elected Albert II from the House of Habsburg as the new King of 

Question: Who is the mother of Wenceslaus IV of Bohemia?
Answer: Anna von Schweidnitz.