question: Who is the paternal grandmother of Eric Iv, Duke Of Saxe-Lauenburg?
context: [["John IV, Duke of Saxe-Lauenburg", ["John IV of Saxe- Lauenburg( *?\u2013 1414*) was a son of Duke Eric IV of Saxe- Lauenburg and Sophia of Brunswick- L\u00fcneburg."]], ["Eric II, Duke of Saxe-Lauenburg", ["Eric II of Saxe-Lauenburg (1318/1320 \u2013 1368) was a son of Duke Eric", "I of Saxe-Lauenburg and Elisabeth of Pomerania (", "*1291\u2013after 16 October 1349", "*), daughter of Bogislaw IV, Duke of Pomerania.", "Eric II succeeded his father, after his resignation in 1338, as duke of Saxe-Ratzeburg-Lauenburg, a branch duchy of Saxe-Lauenburg.", "Eric II and his cousin Albert V of Saxe-Bergedorf-M\u00f6lln ravaged merchants and other travellers passing their duchies.", "In 1363 the city of Hamburg and Adolphus IX (aka VII) \"the Mild\", Count of Schauenburg and Holstein-Kiel, supported by his relative Prince-Archbishop Albert II of Bremen, freed the streets northeast of the city from the brigandage by Eric II and Albert V, conquering the latter's castle in Bergedorf."]], ["Bernard II, Duke of Saxe-Lauenburg", ["Bernard II of Saxe- Lauenburg( ca. 1385/1392\u201316 July 1463) was a member of the House of Ascania and Duke of Saxe- Lauenburg from 1426 to 1463.", "His full title was Duke of Saxony, Angria and Westphalia, however only ruling the branch duchy of Saxe- Lauenburg between 1426 and 1463."]], ["Duke Francis Henry of Saxe-Lauenburg", ["Francis Henry of Saxe- Lauenburg( born: 9 April 1604; died: 26 November 1658) was a Prince of Saxe- Lauenburg"]], ["Julius Henry, Duke of Saxe-Lauenburg", ["Julius Henry of Saxe-Lauenburg (9 April 1586 \u2013 20 November 1665) was duke of Saxe-Lauenburg between 1656 and 1665.", "Before ascending to the throne he served as Field Marshal in the imperial army."]], ["Eric V, Duke of Saxe-Lauenburg", ["Eric V of Saxe- Lauenburg( died 1436) was a member of the House of Ascania; son of Duke Eric IV of Saxe- Lauenburg and Sophia of Brunswick- L\u00fcneburg.", "Eric V and his brother John IV jointly succeeded their father in 1412 as dukes of Saxe- Lauenburg.", "After John IV had died in 1414, Eric ruled alone."]], ["Eric IV, Duke of Saxe-Lauenburg", ["Eric IV of Saxe-Lauenburg (1354 \u2013 21 June 1411 or 1412) was a son of Eric II, Duke of Saxe-Lauenburg and Agnes of Holstein."]], ["John V, Duke of Saxe-Lauenburg", ["John V of Saxe- Lauenburg( also numbered John IV; 18 July 1439 \u2013 15 August 1507) was the eldest son of Duke Bernard II of Saxe- Lauenburg and Adelheid of Pomerania- Stolp( 1410 \u2013 after 1445), daughter of Duke Bogislaus VIII of Pomerania- Stolp.", "He succeeded his father in 1463 as duke of Saxe- Lauenburg."]], ["Francis Charles of Saxe-Lauenburg", ["Francis Charles of Saxe- Lauenburg( born: 2 May 1594; died: 30 November 1660 in Neuhaus) was a prince of Saxe- Lauenburg and a general during the Thirty Years' War."]], ["Magnus I, Duke of Saxe-Lauenburg", ["Magnus I of Saxe-Lauenburg (1 January 1470 \u2013 1 August 1543) was a Duke of Saxe-Lauenburg from the House of Ascania."]]]
supporting_facts: [["Eric IV, Duke of Saxe-Lauenburg", 0], ["Eric II, Duke of Saxe-Lauenburg", 1]]
evidences: [["Eric IV of Saxe-Lauenburg", "father", "Eric II, Duke of Saxe-Lauenburg"], ["Eric II, Duke of Saxe-Lauenburg", "mother", "Elisabeth of Pomerania"]]
answer: Elisabeth of Pomerania