Philip William August, Count Palatine of Neuburg
Philip William August, Count Palatine of Neuburg( born 19 November 1668 in Neuburg an der Donau; died: 5 April 1693 in Zákupy) was a Prince and Count Palatine of Neuburg.
Rudolph II, Count Palatine of Tübingen
Rudolph II, Count Palatine of Tübingen( died 1 November 1247) was Count Palatine of Tübingen and Vogt of Sindelfingen.
He was the younger son of Rudolph I and his wife Matilda of Gleiberg, heiress of Giessen.
Adolf I of Lotharingia
Adolf I of Lotharingia, count of Keldachgau, Vogt of Deutz from 1008 until 1018, was the son of Hermann I" Pusillus"( the Little Pfalzgraf), count palatine of Lotharingia.
He left three sons:
John Christian, Count Palatine of Sulzbach
John Christian( 23 January 1700 – 20 July 1733;" in German: Johann Christian Joseph") was the Count Palatine of Sulzbach from 1732 – 33.
He was the second and youngest surviving son of duke Theodore Eustace, Count Palatine of Sulzbach( 1659 – 1732) with his consort Eleonore Maria Amalia of Hesse- Rotenburg( 1675 – 1720).
His elder brother was Joseph Charles, Count Palatine of Sulzbach.
Otto II, Duke of Swabia
Otto II( – 7 September 1047), a member of the Ezzonid dynasty, was Count Palatine of Lotharingia from 1034 until 1045 and Duke of Swabia from 1045 until his death.
Erenfried II
Erenfried II (died) was a Lotharingian nobleman, from the area of Bonn in what is now Germany.
According to one proposal, he was son of Eberhard I, Count of Bonngau and Zülpichgau.
He was Count in Keldachgau, Count in the Zülpichgau (942), in the Bonngau (945), in Hubbelrath (950).
Possibly he was also the Count of this name in the Hattuariergau (947) and in the neighbouring Tubalgau (Duffelgau) (948), and also count in the Belgian county of Huy, and Vogt of the Stavelot Abbey.
Various historians interpret all or some of these to be a contemporary of the same name, Ehrenfrid, son of Ricfrid.
It is proposed that he married Richwara (died 10 Jul 963) and had issue:
Although there is record of Hermann's mother being Richwara, the proposal concerning who his father is likely but not certain.
Henry of Laach
Henry of Laach (In German: "Heinrich von Laach") was the first count palatine of the Rhine (1085/1087–1095).
Henry was the son of Herman I, count of Gleiberg.
Henry was a follower of Henry IV, Holy Roman Emperor.
He had lands in the southeastern Eifel and on the Moselle River.
Most of the holdings of Hermann II, Count Palatine fell back to the emperor, when Hermann died without successor.
The emperor named Henry count palatine of the Rhine and during the emperor's trip to Italy tasked Henry to hold interim judicial councils.
Henry married Herman's widow, Adelaide of Weimar-Orlamünde (d. 1100).
From this marriage, Henry may have taken control over some of her holdings along the Moselle.
As a consequence, the geographic center of the palatinate moved towards the south.
With his wife, Adelaide, Henry founded the Maria Laach Abbey.
He was succeeded by his stepson, Siegfried of Ballenstedt.
Herman I, Count Palatine of Lotharingia
Herman I (died 996 AD), called "Pusillus" or "the Slender", was the Count Palatine of Lotharingia, and of several counties along the Rhine, including Bonngau, Eifelgau, Mieblgau, Zülpichgau, Keldachgau, Alzey, and Auelgau.
From 945 AD until his death in 996 AD.
He was the son of Erenfried II and Richwara of Zülpichgau.
He was first married to Heylwig von Dillingen; secondly, to Dietbirg of Swabia.
He left four sons and one daughter:
Hermann II, Count Palatine of Lotharingia
Hermann II( born 1049; died Dalhem, 20 September 1085), Count Palatine of Lotharingia 1064 – 1085.
He was count in the Ruhrgau and the Zulpichgau, as well as count of Brabant.
According to Egon Kimpen he was the son of Henry I of Lotharingia( † 1061) and Mathild of Verdun( † 1060), daughter of Gozelo I of Lotharingia, but the basis for this has been questioned.
In 1080 he married Adelaide of Weimar- Orlamünde( † 1100), widow of Adalbert II, Count of Ballenstedt.
She was a daughter of Otto of Orlamünde, count of Weimar and margrave of Meissen in Thuringia, and Adela of Brabant.
Together they had two children who had died by 1085.
He is assumed to have been the last Count Palatine of Lotharingia of the Ezzonian dynasty.
He was killed in a duel with Albert III, Count of Namur, near his castle in Dalhem( County of Limburg).
His widow married again, her third husband being Henry of Laach, count in the Mayfeldgau, who became the first count palatine of the Rhine between 1085 and 1087.
Otto I, Count Palatine of Mosbach
Otto I( 24 August 1390 – 5 July 1461) was the Count Palatine of Mosbach from 1410 until 1448, and the Count Palatine of Mosbach- Neumarkt from 1448 until 1461.

Question: Who is Herman I, Count Palatine Of Lotharingia's paternal grandfather?
Answer: Eberhard I, Count of Bonngau