Gerard II, Count of Guelders
Gerard II was Count of Guelders from March 1129 until his death on October 24, 1131.
He was the son of Gerard I, Count of Guelders.
Around 1116, Gerard married Ermgard of Zutphen, daughter of Otto II, Count of Zutphen and Judith of Arnstein.
They had two children:
Werner I, Count of Klettgau
Werner I, Count of Klettgau was a nobleman and an early member of the House of Habsburg.
He was ancestor of King Rudolph I of Germany.
Werner was sometimes called Werner the Pious.
His father was Radbot, Count of Habsburg, and his mother was Ida de Lorraine (also known as Ita von Lothringen), who was the daughter of Frederick I, Duke of Upper Lorraine.
In 1057, Werner married Reginlinde of Nellenbourg (1027–1090).
He had two sons: Otto II, and Albert II (also known as Albrecht II or Adalbert II).
Otto II, Count of Waldeck
Otto II, Count of Waldeck( before 1307 – 1369) was Count of Waldeck from 1344 until his death.
Otto II, Holy Roman Emperor
Otto II (955 – December 7, 983), called the Red ("Rufus"), was Holy Roman Emperor from 973 until his death in 983.
A member of the Ottonian dynasty, Otto II was the youngest and sole surviving son of Otto the Great and Adelaide of Italy.
Otto II was made joint-ruler of Germany in 961, at an early age, and his father named him co-Emperor in 967 to secure his succession to the throne.
His father also arranged for Otto II to marry the Byzantine Princess Theophanu, who would be his wife until his death.
When his father died after a 37-year reign, the eighteen-year-old Otto II became absolute ruler of the Holy Roman Empire in a peaceful succession.
Otto II spent his reign continuing his father's policy of strengthening Imperial rule in Germany and extending the borders of the Empire deeper into southern Italy.
Otto II also continued the work of Otto I in subordinating the Catholic Church to Imperial control.
Early in his reign, Otto II defeated a major revolt against his rule from other members of the Ottonian dynasty who claimed the throne for themselves.
His victory allowed him to exclude the Bavarian line of the Ottonians from the line of Imperial succession.
This strengthened his authority as Emperor and secured the succession of his own son to the Imperial throne.
With domestic affairs settled, Otto II would focus his attention from 980 onward to annexing the whole of Italy into the Empire.
His conquests brought him into conflict with the Byzantine Empire and with the Muslims of the Fatimid Caliphate, who both held territories in southern Italy.
After initial successes in unifying the southern Lombard principalities under his authority and in conquering Byzantine-controlled territory, Otto II's campaigns in southern Italy ended in 982 following a disastrous defeat by the Muslims.
While he was preparing to counterattack Muslim forces, a major uprising by the Slavs broke out in 983, forcing the Empire to abandon its major territorial holdings east of the Elbe river.
Otto II died suddenly in 983 at the age of 28 after a ten-year reign.
He was succeeded as Emperor by his three-year-old son Otto III, plunging the Empire into a political crisis.
Werner II, Count of Habsburg
Werner II of Habsburg( died 19 August 1167) was Count of Habsburg also called Werner III and a progenitor of the royal House of Habsburg.
He was the great- great- grandfather of King Rudolph I of Germany.
He was the son of Count Otto II of Habsburg and Hilla of Pfirt.
Werner married Ida of Homberg.
He is known for having been involved in the War of Bregenz Succession of 1164 – 1166.
He died near Tusculum after the Battle of Monte Porzio.
He was the father of Count Albert III of Habsburg and Bishop Otto II of Constance( 1165 – 1174).
His daughter Richenza married Count Louis I of Pfirt.
Otto II, Count of Habsburg
Otto II (died 8 November 1111) was a (Count) of Habsburg and one of the founding members of the Habsburg family.
He was the son of Werner I, Count of Habsburg.
In 1108, Otto accompanied king Henry V on a campaign against Hungary.
On his return, in 1111, he was murdered.
Otto is presumed to be the first person to adopt the title .
He married Hilla,
countess von Pfirt (died), with whom he had two children, Werner II and Adelheid.
Rudolph II, Count of Habsburg
Rudolph II( or Rudolph the Kind)( died 10 April 1232) was Count of Habsburg in the Aargau and a progenitor of the royal House of Habsburg.
He was the only son of Count Albert III of Habsburg and Ita of Pfullendorf.
He married Agnes of Staufen.
Rudolph was the father of Count Albert IV of Habsburg and Count Rudolph III of Habsburg and the grandfather of King Rudolph I of Germany.
Otto II, Count of Rietberg
Otto II, Count of Rietberg( died 18 July 1389) was the ruling Count of Rietberg from 1365 until his death.
Otto II, Count of Guelders
Otto II, Count of Guelders( Dutch: Otto II, Graaf van Gelre) was a nobleman from the 13th century.
He was the son of Gerard III, Count of Guelders and Margaretha of Brabant.
Giselbert II, Count of Duras
Count Giselbert( or Gilbert)( d. before 1138), was the deputy advocate(" subadvocatus") of Saint Trudo ’s Abbey.
At least by 1111 he began to be referred to as not just a count, but specifically the Count of Duras, and he may have been the first to be known under that title.
He was son of Otto I, Count of Duras, and his wife Oda.
Giselbert was involved in several conflicts which involved the abbey, as mentioned in several parts in the Abbey's" Gesta" or chronicle.
Apart from the" Gesta", much of what we know about Giselbert is from the charters that he witnessed, which also gives insight as to his relationship with the Counts of Namur, a family into which he eventually married.
Emperor Henry IV confirmed donations made by Henry I, Count of Durbuy, son of Albert II, Count of Namur, to the Church of Saint James in Liège, as witnessed by Giselbert.
The emperor also confirmed the claim of Albert ’s family to Saint Begga's Collegiate Church in Andenne.
Giselbert married twice.
His first wife was Gertrud, of unknown parentage.
His second wife was Oda, daughter of Otto II, Count of Chiny, and his wife Alix, daughter of Albert III, Count of Namur.
Giselbert and Gertrud had eight children:
Wolters identifies Julienne, daughter of Otto II, as an additional daughter of Giselbert and Gertrud, but this is unlikely as her husband and their sons inherited the countship of Duras.
Upon his death, Giselbert was succeeded as Count of Duras by his son Otto.

Question: Who is Otto Ii, Count Of Habsburg's paternal grandfather?