Question: Who is Godfrey Ii, Duke Of Lower Lorraine's paternal grandfather?

Knowledge 1: Godfrey II, Duke of Lower Lorraine
Godfrey II (965–1023), called the Childless, son of Godfrey I, Count of Verdun, was the duke of Lower Lorraine after the death in 1012 of the Carolingian Otto, who left no sons.He was appointed duke by Henry II, Holy Roman Emperor, on the advice of Gerard of Florennes, bishop of Cambrai.His selection was based on the need for a strong military hand to pacify the duchy and stabilise the French border.It also benefitted that Godfrey was from Upper Lorraine and thus had no stake in the feudal strife of the baronage, he was loyal to the Ottonians.He also had the support of his brothers: Gothelo, margrave of Antwerp, and Herman, margrave of Ename (Brabant).In 1012, he gave Verdun to his brother Frederick.He had to combat several opponents to his ducal claim, however:Lambert I, Count of Leuven, brother-in-law of Otto, and Reginar IV, count of Mons.At Florennes, on 12 September 1015, Godfrey defeated both of them, killing Lambert and forcing Reginar to make peace.Reginar later married Godfrey's niece Matilda (daughter of Herman of Ename, count in the shire of Brabant) and succeeded his father-in-law in the southern part of the shire Brabant (later on part of county of Hainault).Later, Godfrey fell into combat with Gerard, count of Metz.On 27 August 1017, he defeated him despite numerical inferiority.He was the leader of the imperial army which was defeated at Vlaardingen by Dirk III of Holland in 1018.He was succeeded by his younger brother Gothelo. [SEP] Knowledge 2: Godfrey I, Count of Verdun
Godfrey I (died 1002), called the Prisoner or the Captive ("le Captif"), sometimes the Old ("le Vieux"), was the count of Bidgau and Methingau from 959 and the count of Verdun from 963 to his death.In 969, he obtained the Margraviate of Antwerp and Ename.Between 974 and 998, he was also the count of Hainault and Mons.He was the son of Gozlin, Count of Bidgau and Methingau, and Oda of Metz.He was the brother of Adalberon, Archbishop of Reims, who crowned Hugh Capet the king of France.He was the founder of the House of Ardennes-Verdun, a cadet branch of the House of Ardennes.He was always loyal to the Ottonians, whom he was related through his maternal grandmother.
Knowledge 1: Godfrey II, Duke of Lower Lorraine
Godfrey II (965–1023), called the Childless, son of Godfrey I, Count of Verdun, was the duke of Lower Lorraine after the death in 1012 of the Carolingian Otto, who left no sons.He was appointed duke by Henry II, Holy Roman Emperor, on the advice of Gerard of Florennes, bishop of Cambrai.His selection was based on the need for a strong military hand to pacify the duchy and stabilise the French border.It also benefitted that Godfrey was from Upper Lorraine and thus had no stake in the feudal strife of the baronage, he was loyal to the Ottonians.He also had the support of his brothers: Gothelo, margrave of Antwerp, and Herman, margrave of Ename (Brabant).In 1012, he gave Verdun to his brother Frederick.He had to combat several opponents to his ducal claim, however:Lambert I, Count of Leuven, brother-in-law of Otto, and Reginar IV, count of Mons.At Florennes, on 12 September 1015, Godfrey defeated both of them, killing Lambert and forcing Reginar to make peace.Reginar later married Godfrey's niece Matilda (daughter of Herman of Ename, count in the shire of Brabant) and succeeded his father-in-law in the southern part of the shire Brabant (later on part of county of Hainault).Later, Godfrey fell into combat with Gerard, count of Metz.On 27 August 1017, he defeated him despite numerical inferiority.He was the leader of the imperial army which was defeated at Vlaardingen by Dirk III of Holland in 1018.He was succeeded by his younger brother Gothelo. [SEP] Knowledge 2: Gerberga of Lower Lorraine
Gerberga of Lower Lorraine, Countess of Louvain, was the daughter of Charles, Duke of Lower Lorraine, himself the son of Louis IV of France and Gerberga of Saxony.
Knowledge 1: Godfrey I, Count of Verdun
Godfrey I (died 1002), called the Prisoner or the Captive ("le Captif"), sometimes the Old ("le Vieux"), was the count of Bidgau and Methingau from 959 and the count of Verdun from 963 to his death.In 969, he obtained the Margraviate of Antwerp and Ename.Between 974 and 998, he was also the count of Hainault and Mons.He was the son of Gozlin, Count of Bidgau and Methingau, and Oda of Metz.He was the brother of Adalberon, Archbishop of Reims, who crowned Hugh Capet the king of France.He was the founder of the House of Ardennes-Verdun, a cadet branch of the House of Ardennes.He was always loyal to the Ottonians, whom he was related through his maternal grandmother. [SEP] Knowledge 2: Godfrey III, Duke of Lower Lorraine
Godfrey III (–1069), called the Bearded, was the eldest son of Gothelo I, Duke of Upper and Lower Lorraine.By inheritance, he was Count of Verdun and he became Margrave of Antwerp as a vassal of the Duke of Lower Lorraine.The Holy Roman Emperor Henry III authorized him to succeed his father as Duke of Upper Lorraine in 1044, but refused him the ducal title in Lower Lorraine, for he feared the power of a united duchy.Instead Henry threatened to appoint a younger son, Gothelo, as Duke in Lower Lorraine.At a much later date, Godfrey became Duke of Lower Lorraine, but he had lost the upper duchy by that point in time.Godfrey rebelled against his King and devastated land in Lower Lorraine, as well as the City of Verdun; which, though his by inheritance, Henry had not given him.He was soon defeated by an imperial army, deposed and imprisoned together with his son (Gibichenstein, 1045).When his son died in prison, the war recommenced.Baldwin V of Flanders joined Godfrey and Henry gave Thierry, Bishop of Verdun, the eponymous county.Godfrey surprised the Bishop (who escaped) and sacked Verdun, burning the cathedral.On 11 November 1048 at Thuin, Godfrey fell on Adalbert, his replacement in Upper Lorraine, and defeated him, killing him in battle.Henry immediately nominated the young Gerard of Chatenoy to replace Adalbert at the Diet of Worms.In his subsequent campaigns to take the Moselle region, Godfrey met with stiff resistance from Gerard and was forced to renounce his claims and reconcile with the Bishop.He even assisted in rebuilding the cathedral he had destroyed.In 1053, his first wife Doda having died, Godfrey remarried Beatrice of Bar, the widow of Boniface III of Tuscany and mother of Matilda, Boniface's heir.Henry arrested Beatrice and her young son Frederick and imprisoned her in Germany, separate from either husband or son, who died within days.The emperor claimed the marriage had been contracted without his consent and was invalid.Young Frederick died a short while later.Nevertheless, Godfrey took over the government of the Tuscany in right of Beatrice and Matilda.Baldwin V then rebelled, carrying the war to Trier and Nijmegen.Henry responded by devastating Flanders and ravaging Lille and Tournai (1054).In this war, Godfrey captured Frederick of Luxembourg, Duke of Lower Lorraine, who had received that duchy, including Antwerp, from Henry III.In 1055, Godfrey besieged Antwerp, but Frederick was delivered by the Lorrainers, no longer loyal to Godfrey.Henry died in 1056 and his successor, Henry IV, was only six years old.In that year, Baldwin made peace and did homage to the new King.In 1056 and 1059, by the treaties of Andernach, Baldwin received the March of Ename in the Landgraviate of Brabant, probably in exchange for giving up the March of Valenciennes, which was confiscated by Emperor Henry III in 1045.In 1057, Godfrey was exiled to Tuscany, where he joined Beatrice and co-governed with her.He was enfeoffed with the Duchy of Spoleto (1057) by Pope Stephen IX, his brother.In January 1058, Leo de Benedicto Christiano threw open the city gates to him and Beatrice after the election of Pope Nicholas II.Possessing the Tiber and assaulting the Lateran, Godfrey succeeded in expelling the antipope Benedict X on 24 January.During the papal reign of his brother and his brother's reforming successors, he played an important role in the politics of central and northern Italy, including Sardinia, where he interfered on behalf of Barisone I of Logudoro against the Republic of Pisa, indicating his authority over both.In 1065, he was recalled to become Duke of Lower Lorraine after the death of Frederick.He was also given Antwerp again.He installed his court at Bouillon and died on Christmas Eve 1069.

Answer: Gozlin, Count of Bidgau