John, Duke of Ścinawa
John( c. 1298 – by 19 May 1365) was a Duke of Żagań, Ścinawa, etc. during 1309 – 1317( with his brothers as co-rulers), Duke of Poznań during 1312 – 1314( with his brothers) and sole Duke of Ścinawa since.
He was the fourth son of Henry III( I), Duke of Głogów, by his wife Matilda, daughter of Albert I, Duke of Brunswick- Lüneburg.
Henry III, Duke of Limburg
Henry III (– 21 June 1221) was the Duke of Limburg and Count of Arlon from 1165 to his death.
He was the son and successor of Henry II and Matilda of Saffenberg.
In 1172, he fought against the Count of Luxembourg, Henry IV the Blind, and then his ally, the Count of Hainaut, Baldwin V.
The environs of Arlon were devastated and the duke, overcome, had to recompense the Count of Luxembourg for the wrongs he had done him.
In 1183, he supported the election of Folmar of Karden as Archbishop of Trier.
This was opposed by the emperor, Frederick Barbarossa.
In 1213, Henry faced his nephew Henry, Duke of Brabant at the battle of Steppes.
The Duke of Brabant's army broke and ran.
Henry later supported Otto of Brunswick over Philip of Swabia as German king and imperial claimant.
He fought at the Battle of Bouvines in 1214 for Otto of Brunswick, while his son Waleran sided with Philip II of France.
Adolf of Limburg
Adolf of Limburg, count of Limburg( died 1506), son of Wilhelm I of Limburg, count of Limburg.
He married in 1487 Elisabeth von Reichenstein( d. 1529) and they had issue:
Henry III, Duke of Mecklenburg
Henry III, Duke of Mecklenburg( 1337 – 24 April 1383) was Duke of Mecklenburg from 1379 until his death.
Konrad I of Oleśnica
Konrad I of Oleśnica( – 22 December 1366) was a Duke of Żagań and Ścinawa during 1309 – 1312( with his brothers as co-rulers), Duke of Oleśnica, Namysłów, Gniezno and Kalisz during 1312 – 1313( with his brother as co-ruler), Duke of Kalisz during 1313 – 1314( alone), Duke of Namysłów since 1313( alone) and Duke of Oleśnica since 1321 until his death( alone).
He was the second son of Henry III( I), Duke of Głogów, by his wife Matilda, daughter of Albert I, Duke of Brunswick- Lüneburg.
Eberhard of Limburg
Eberhard of Limburg, count of Limburg( died before 1426), son of Dietrich III of Limburg, count of Limburg.
He married Ponzetta von Saffenberg and they had issue:
Adenes Le Roi
Adenes le Roi( born in Brabant c. 1240, died c. 1300), was French minstrel or trouvère.
He was a favourite of Henry III, duke of Brabant, and he remained at court for some time after the death of his patron in 1261.
Bolesław of Oleśnica
Bolesław of Oleśnica( c. 1295 – before 23 April 1321), was a Duke of Żagań, Ścinawa, etc., during 1309- 1312( with his brothers as co-rulers), Duke of Oleśnica, Namysłów, Gniezno and Kalisz during 1312- 1313( with his brother as co-ruler), Duke of Gniezno during 1313- 1314( alone) and Duke of Oleśnica since 1313 until his death( alone).
He was the third son of Henry III( I), Duke of Głogów, by his wife Matilda, daughter of Albert I, Duke of Brunswick- Lüneburg.
Henry II, Duke of Limburg
Henry II (– August 1167) was the duke of Limburg from 1139 and count of Arlon from 1147 to his death.
He was the son of Waleran, Duke of Lower Lorraine, and Jutta of Guelders, daughter of Gerard I of Guelders.
He succeeded his father in Limburg with the title of duke, but Conrad III refused to grant him Lower Lorraine.
He continued to style himself as duke nevertheless.
Henry Percy, 1st Earl of Northumberland
Henry Percy, 1st Earl of Northumberland, 4th Baron Percy, titular King of Mann, KG, Lord Marshal( 10 November 134120 February 1408) was the son of Henry de Percy, 3rd Baron Percy, and a descendant of Henry III of England.
His mother was Mary of Lancaster, daughter of Henry, 3rd Earl of Lancaster, son of Edmund, Earl of Leicester and Lancaster, who was the son of Henry III.

Question: Who is the paternal grandfather of Henry Iii, Duke Of Limburg?
Answer: Waleran, Duke of Lower Lorraine