Question: Who is the paternal grandfather of Fenenna Of Kuyavia?

Knowledge 1: Fenenna of Kuyavia
Fenenna of Kuyavia (also known as of Inowrocław; ; ca. 1276–1295) was a Queen of Hungary by marriage to King Andrew III.Fenenna was the daughter of Duke Ziemomysł of Inowrocław by his wife Salomea, daughter of Duke Sambor II of Pomerania.Fenenna's existence is corroborated by only two sources: the "Genealogy of Saint Hedwig" and the Chronicles of Jan Długosz, as well in the Hungarian sources.The "Genealogy" states that an unnamed daughter of Duke Ziemomysł was betrothed to the King of Hungary.Based on this information, Jan Długosz stated that Fenenna married King Stephen V.This erroneous information was maintained by the later historiography until the 19th century, when Fenenna was correctly described as the wife of King Andrew III.Although Fenenna did not play a significant role in the Hungarian court, her marriage did strengthen the alliance between her husband and her uncleWładysławI the Elbow-high, and it also benefited her Kuyavia relatives' relations with, among others, King Wenceslaus II of Bohemia.Shortly after Andrew III's death, their daughter Elizabeth was betrothed to the future Wenceslaus III, who claimed the Hungarian crown. [SEP] Knowledge 2: Ziemomysł of Kuyavia
Ziemomysł of Inowrocław (c. 1245 – October/24 December 1287), was a Polish prince member of the House of Piast, Duke of Inowrocław during 1267-1271 and 1278-1287, and ruler over Bydgoszcz during 1267-1269 and 1278-1287.He was the second son of Casimir I of Kuyavia and his second wife Constance, daughter of Henry II the Pious.
Knowledge 1: Fenenna of Kuyavia
Fenenna of Kuyavia (also known as of Inowrocław; ; ca. 1276–1295) was a Queen of Hungary by marriage to King Andrew III.Fenenna was the daughter of Duke Ziemomysł of Inowrocław by his wife Salomea, daughter of Duke Sambor II of Pomerania.Fenenna's existence is corroborated by only two sources: the "Genealogy of Saint Hedwig" and the Chronicles of Jan Długosz, as well in the Hungarian sources.The "Genealogy" states that an unnamed daughter of Duke Ziemomysł was betrothed to the King of Hungary.Based on this information, Jan Długosz stated that Fenenna married King Stephen V.This erroneous information was maintained by the later historiography until the 19th century, when Fenenna was correctly described as the wife of King Andrew III.Although Fenenna did not play a significant role in the Hungarian court, her marriage did strengthen the alliance between her husband and her uncleWładysławI the Elbow-high, and it also benefited her Kuyavia relatives' relations with, among others, King Wenceslaus II of Bohemia.Shortly after Andrew III's death, their daughter Elizabeth was betrothed to the future Wenceslaus III, who claimed the Hungarian crown. [SEP] Knowledge 2: Elizabeth of Kuyavia
Elizabeth of Kuyavia(/ Елизабета; 1315/ 1320 – after 22 August 1345) was a Polish noblewoman of the House of Piast.She was the only daughter of Duke Kazimierz III of Gniewkowo and his wife, whose name and origins are unknown; her brother, Władysław the White, was later a candidate for the Polish throne.By 1323, King Charles I of Hungary wanted to increase influence over Stephen II, Ban of Bosnia.He offered Stephan the hand of Elizabeth, the relative of his own Piast wife Elizabeth.By marrying Elizabeth of Kuyavia, Stephen received from Charles the lands to the west formerly held by Mladen I Šubić of Bribir and Usora and Soli in the north formerly held by Vladislav, King of Syrmia.The marriage was celebrated by 1339.Up to 1339, Stephan was married to an unknown Bulgarian princess.The only child which can be attributed to Elizabeth of Kuyavia without doubt is Elizabeth of Bosnia, born c. 1340.Some believe that Catherine of Bosnia, Countess of Cilli, was daughter of Elizabeth of Kuyavia and Stephen II, while others argue that Catherine was daughter of Stephen II's brother Vladislaus and his wife Jelena Šubić.Elizabeth may have also had a son, Vuk who may have survived infancy but he did not outlive his father so never became Ban of Bosnia.Vuk may have been the son of one of Stephen's previous two wives.Stephen outlived Elizabeth.It is unknown what Elizabeth died of.Judging by the time, it is possible that she died of Black Death, which was sweeping across Europe during the 14th century.Banness Elizabeth was buried in Bobovac in a tomb which she shared with her husband, brother- in- law Vladislaus and sister- in- law Jelena.After Elizabeth of Kuyavia's death, her daughter Elizabeth was fostered by the Hungarian queen dowager Elizabeth and this soon led to Elizabeth's marriage to Louis I of Hungary.
Knowledge 1: Fenenna of Kuyavia
Fenenna of Kuyavia (also known as of Inowrocław; ; ca. 1276–1295) was a Queen of Hungary by marriage to King Andrew III.Fenenna was the daughter of Duke Ziemomysł of Inowrocław by his wife Salomea, daughter of Duke Sambor II of Pomerania.Fenenna's existence is corroborated by only two sources: the "Genealogy of Saint Hedwig" and the Chronicles of Jan Długosz, as well in the Hungarian sources.The "Genealogy" states that an unnamed daughter of Duke Ziemomysł was betrothed to the King of Hungary.Based on this information, Jan Długosz stated that Fenenna married King Stephen V.This erroneous information was maintained by the later historiography until the 19th century, when Fenenna was correctly described as the wife of King Andrew III.Although Fenenna did not play a significant role in the Hungarian court, her marriage did strengthen the alliance between her husband and her uncleWładysławI the Elbow-high, and it also benefited her Kuyavia relatives' relations with, among others, King Wenceslaus II of Bohemia.Shortly after Andrew III's death, their daughter Elizabeth was betrothed to the future Wenceslaus III, who claimed the Hungarian crown. [SEP] Knowledge 2: Lyon Cohen
Lyon Cohen( 1868–1937) was a Polish- born Canadian businessman and a philanthropist.He was the grandfather of singer/ poet Leonard Cohen.

Answer: Casimir I of Kuyavia