question: Who is the mother of Burchard Iii, Duke Of Swabia?
context: [["Jane Wigham", ["Jane Wigham( n\u00e9e Smeal; 1801\u20131888) was a leading Scottish abolitionist.", "She was the stepmother of Eliza Wigham and the second wife of John Wigham."]], ["Burchard, Margrave of Istria", ["Burchard II or Burkhard II, also Purcard, was the son of Burchard I of Moosburg and elder brother of Burchard III.", "He was created Margrave of Istria sometime before 1093, when he first appears in a charter of the Emperor Henry IV along with other nobles of his native land of Bavaria.", "He was appointed vogt of Aquileia in 1101.", "He died between 1106 and 13 February 1107.", "He left by his wife Acica a daughter named Matilda.", "His son- in- law Conrad exercised his authority in Aquileia after his death."]], ["Kunigunde of Hohenstaufen", ["Kunigunde of Hohenstaufen or Kunigunde of Swabia( February/ March 1202 \u2013 13 September 1248) was the third daughter of Philip, Duke of Swabia and his wife, Irene Angelina."]], ["Burchard II, Duke of Swabia", ["Burchard II (883/88429 April 926) was the Hunfriding Duke of Swabia (from 917) and Count of Raetia.", "He was the son of Burchard I of Swabia and Liutgard of Saxony.", "Burchard took part in the early wars over Swabia.", "His family being from Franconia, he founded the convent of St Margarethen in Waldkirch to extend his family's influence into the Rhineland.", "On his father's arrest and execution for high treason in 911, he and his wife, Regelinda, daughter of Count Eberhard", "I of Z\u00fcrich, went to Italy: either banished by Count Erchanger or voluntarily exiling themselves to their relatives over the Alps.", "Around 913, Burchard returned from exile and took control over his father's property.", "In 915, he joined Erchanger and Arnulf, Duke of Bavaria, in battle at Wahlwies.", "Following the battle, Erchanger was proclaimed duke.", "After Erchanger was executed on 21 January 917, Burchard seized all his lands and was recognised universally as duke.", "In 919, King Rudolph II of Upper Burgundy seized the county of Z\u00fcrich and invaded the region of Konstanz, then the centre and practical capital of the Swabian duchy.", "At Winterthur, however, Rudolph was defeated by Burchard, who thus consolidated the duchy and forced on the king his own territorial claims.", "In that same year, he recognised the newly elected king of Germany, Henry the Fowler, duke of Saxony.", "Henry in turn gave Burchard rights of taxation and investiture of bishops and abbots in his duchy.", "In 922, Burchard married his daughter Bertha to Rudolph and affirmed the peace of three years prior.", "Burchard then accompanied Rudolph into Italy when he was elected king by opponents of the Emperor Berengar.", "In 924, the emperor died and Hugh of Arles was elected by his partisans to oppose Rudolph.", "Burchard attacked Novara, defended by the troops of Lambert, Archbishop of Milan.", "There he was killed, probably on 29 April.", "His widow, Regelinda (d. 958), remarried to Burchard's successor, Herman I. She had given him five children:"]], ["May Green Hinckley", ["May Green Hinckley( May 1, 1881 \u2013 May 2, 1943) was the third general president of the Primary of The Church of Jesus Christ of Latter- day Saints( LDS Church) from 1940 until her death.", "She was the stepmother of Gordon B. Hinckley, fifteenth president of the LDS Church."]], ["Irene Baker", ["Edith Irene Bailey Baker( November 17, 1901 \u2013 April 2, 1994) was an American politician and a United States Representative from Tennessee.", "She was the widow of Howard Baker Sr. and the stepmother of Howard Baker Jr."]], ["Judith of Bavaria, Duchess of Swabia", ["Judith of Bavaria, Duchess of Swabia( 19 May 1100 \u2013 27 Aug 1130) was a Duchess of Swabia by marriage to Frederick II, Duke of Swabia.", "She was the mother of Frederick I, Holy Roman Emperor, known to history as\" Barbarossa\"."]], ["Burchard III, Duke of Swabia", ["Burchard III (c. 91512 November 973), a member of the Hunfriding dynasty, was the count of Thurgau and Z\u00fcrichgau, perhaps of Rhaetia, and then Duke of Swabia from 954 to his death.", "He was the son of Burchard II, Duke of Swabia and Regilinda.", "At a young age on the murder of his father in 926, he was sent to Saxony for his safety after the accession of the duke Herman I.", "In Saxony, he married a member of the Immedinger family.", "From this marriage came two sons:", "Theodoric, count of Wettin, and Burchard, count of Liesgau.", "His second marriage was to Hedwig, daughter of Henry I, Duke of Bavaria.", "Burchard built the great fortress atop the Hohentwiel, and Hedwige was the foundress of the monastery of St. George there, but their marriage remained childless.", "After the rebellion of Duke Liudolf, son of King Otto I, in 954, the king bestowed the ducal title on his nephew-in-law Burchard at a general council at Arnstadt.", "Burchard was an intimate of Otto and his queen, Adelaide of Italy.", "He was often at the royal court and he accompanied Otto on his campaign against the Magyars and was present at the great Battle of the Lechfeld on 10 August 955.", "In 965, he led a third campaign against Berengar II in Italy.", "At the Battle of the Po on 25 June, Burchard defeated Berengar's son, Adalbert, and restored Italy to Ottonian control, even the south Italian principalities were brought to heel by 972.", "In 973, he died and was buried in the chapel of Saint Erasmus in the monastery on Reichenau Island in Lake Constance.", "He was succeeded by Otto, son of Liudolf."]], ["Dorothy Granger", ["Dorothy Karolyn Granger( November 21, 1911 \u2013 January 4, 1995) was an American actress best known for her roles in short subject comedies in Hollywood.", "She was also the stepmother of film maker and former record producer Anthony J. Hilder."]], ["Henriette Feuerbach", ["Henriette Feuerbach( 13 August 1812 \u2013 5 August 1892) was a German author and arts patron.", "She was the wife of Joseph Anselm Feuerbach and the stepmother of painter Anselm Feuerbach, whom she supported in his art."]]]
supporting_facts: [["Burchard III, Duke of Swabia", 1], ["Burchard II, Duke of Swabia", 4]]
evidences: [["Burchard III, Duke of Swabia", "father", "Burchard II, Duke of Swabia"], ["Burchard II, Duke of Swabia", "spouse", "Regelinda"]]
answer: Regelinda