Christian Otto of Limburg
Christian Otto von Limburg Stirum, count of Limburg Bronkhorst and Stirum( 1694 – 1749), was a member of the House of Limburg- Stirum and the third reigning monarch from the branch of Limburg- Styrum- Styrum.
Unruoch III of Friuli
Unruoch III, Unroch III or( H) unroch III( c. 840 – 874, after 1 July) was the margrave of Friuli from 863 to 874.
He was the oldest successor of Eberhard of Friuli.
He married Ava, a daughter of Liutfrid of Monza, and left a son Eberhard of Sulichgau who married Ermentrude of France, granddaughter of Charles the Bald, but was succeeded by his brother Berengar.
He left a daughter who became a nun in Brescia and was abducted by men of Liutward of Vercelli in 887 and forced to marry one of his relatives.
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:
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:
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:
Karl Josef of Limburg Stirum
Karl Josef Maximilian of Limburg Stirum, count of Limburg Styrum, sovereign lord zu Gemen, was the son of Alois of Limburg Stirum.
He inherited the immediate lordship of Gemen from his uncle Ferdinand I of Limburg Stirum in 1791 and remained until his death in 1798.
Alois having survived his three sons, Gemen passed to his grandson Ferdinand IV of Limburg Stirum.
He married Maria Anna Vogel von Wassenhofen and they had five children:
Philipp Wilhelm of Limburg Stirum
Philipp Wilhelm of Limburg Stirum( 1695 – 1758), count of Limburg Stirum, was the second son of Moritz Hermann of Limburg.
He married NN, countess von Hoensbroech and they had five 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:
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.
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:

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