Adolf Ernst of Limburg Stirum
Adolf Ernst of Limburg Stirum, count of Limburg Stirum, sovereign lord zu Gemen, son of Hermann Otto I of Limburg- Styrum.
Adolf Ernst inherited the immediate lordship of Gemen at the death of his father in 1644, creating the Limburg- Styrum- Gemen branch of the family.
He remained lord of Gemen until his death in 1657.
He married in 1644( Maria) Isabella countess von Vehlen und Meggen zu Raesfeld.
She became regent of Gemen when Adolf Ernst was killed, until it passed to her eldest son in 1675.
She died in 1692.
They had eight children:
Leopold of Limburg Stirum (1681-1726)
Leopold Johann Otto Wilhelm of Limburg Stirum( December 27, 1681 – February 11, 1726), was count of Limburg Styrum from the branch Limburg- Styrum- Iller- Aichheim.
He was the first son of Maximilian Wilhelm of Limburg Stirum.
In 1712, he married countess Barbara Draskovich de Trakostjan( June 27,1687- died before 1734).
The couple had two children:
He died before his father and the sovereignty of Simontornya went over to his younger brother Karl Joseph Alois.
Otto Leopold of Limburg Stirum
Otto Leopold of Limburg Stirum, count of Limburg Styrum and Bronckhorst, sovereign lord zu Gemen and Raesfeld, was born in 1688 the son of Hermann Otto II of Limburg Stirum.
He became lord zu Gemen in 1704 at the death of his father, and remained until his death in 1754.
He also inherited from his grandfather Alexander IV count von Velen zu Raesfeld the Lordship of Raesfeld.
He married in 1706 countess Anna Elisabeth von Schönborn( born 1686, died 1757) and they had issue:
Jobst of Limburg
Jobst of Limburg (19 April 1560, Borculo, Gelderland - 7 August 1621) was count of Limburg and Bronckhorst, Lord of Styrum, Wisch and Borculo (1616), and the son of Hermann Georg of Limburg, count of Limburg and Bronckhorst.
He married in 1591 Countess Maria of Schauenburg and Holstein-Pinneberg and they had issue:
Moritz of Limburg
Moritz of Limburg Stirum( 1633 – 1664) was the son of Hermann Otto I of Limburg- Styrum.
He was count of Limburg and Bronkhorst, Lord zu Styrum, Wisch, Borculo and Gemen.
He became hereditary banneret of the Principality of Guelders and of the County of Zütphen.
When the House of Limburg- Stirum was partitioned in 1642 in three parts, he inherited the part Styrum and became the first member of the branch Limburg- Styrum- Styrum.
He married his cousin
Maria Bernhardine, daughter of Bernhard Albrecht of Limburg and Bronckhorst and they had issue:
Otto of Limburg
Otto of Limburg- Styrum,( born 1620, died 27 Aug 1679) count of Limburg and Bronckhorst, was the son of Hermann Otto I of Limburg- Styrum.
He married in 1643 Elisabeth Charlotte countess von Dohna( born 1625, died 1691) and they had eight children:
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 Otto I of Limburg-Styrum
Hermann Otto I of Limburg-Styrum, count of Limburg and Bronckhorst, lord of Styrum, Gemen, Wisch and Borculo, and from 1640 to 1644 advocate of the imperial abbey of Vreden, was born in 1592, and died on 17 October 1644.
He was the eldest son of Jobst of Limburg Stirum.
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.
Friedrich Wilhelm of Limburg
Friedrich Wilhelm of Limburg- Styrum,( born Jul 1649, died Jul 1722) count of Limburg and Bronckhorst was the son of Otto of Limburg- Styrum.
He married in 1683 Lucia d' Aylva and they had seven children:( possibly)

Question: Who is Hermann Otto I Of Limburg-Styrum's paternal grandfather?
Answer: Hermann Georg of Limburg