Georg of Limburg
Georg of Limburg, count of Limburg( died 1552), son of Adolf of Limburg, count of Limburg.
He married in 1539 Irmgard von Wisch, Lady van Wisch of Wisch op Oud- Wisch, Wildenborch, Overhagen and Lichtenvoorde, Hereditary Countess von Bronckhorst( ca 1520- 1587).
They had issue:
After the death of her husband, Irmgard von Wisch was regent for her son, Hermann Georg of Limburg.
Finally she inherited the possessions of her uncle, Count Joost van Bronckhorst- Borculo and brought those territories to the Limburg Stirum.
Wilhelm I of Limburg
Wilhelm I of Limburg, count of Limburg( fl. 1422–1498), son of Eberhard of Limburg.
He married Agnes von Limburg and they had issue:
Adolf of Altena
Adolf of Altena, Adolf of Berg or Adolf of Cologne,( c. 1157 – 15 April 1220 in Neuss) was Archbishop of Cologne from 1193 to 1205.
Henry of Limburg-Broich
Henry of Limburg- Broich(?- 1446) was the Count of Limburg- Broich from 1439- 1446.
Henry was a son of Count Theodoric IV of Limburg- Styrum.
When Count William I of Limburg- Styrum died in 1439, the County was partitioned with Henry receiving the Lordship of Broich.
Henry died in 1449 and was succeeded by William.
Dietrich III of Limburg-Styrum
Dietrich III of Limburg, count of Limburg zu Stirum( fl. 1347 – 1391), son of Johann of Limburg.
He married ca.
1353 Johanna von Reifferscheid and they had issue:
Maximilian Wilhelm of Limburg Stirum
Maximilian Wilhelm of Limburg Stirum( 1653 – 1728), count of Limburg Styrum, sovereign lord of Illereichen and Simontornya.
He was the third son of Adolf Ernst of Limburg Stirum, sovereign lord zu Gemen.
He married in 1677 countess Maria Anna von Rechberg and Rothenlöwen( died 1738).
He left 14 children:
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:
Hermann Georg of Limburg
Hermann Georg of Limburg was count of Limburg and Bronckhorst( 1540 – 1574), son of Georg of Limburg, and count of Limburg and Bronckhorst.
He married in 1554 Maria countess von Hoya und Bruchhausen( died 1612) and they had issue:
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:
Imagina of Isenburg-Limburg
Imagina of Isenburg- Limburg( ca. 1255 – 29 September 1313?) was the Queen consort of Adolf of Nassau, King of Germany.

Question: Who is Adolf Of Limburg's paternal grandfather?
Answer: Eberhard of Limburg