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Birth:          ABT 1075 
Death:          1135 

Notes
with his son Louis, founded the Monastery of Overbaden
https://en.wikipedia.org/wiki/Arnold_I,_Count_of_Loon
Arnold I (1060 - 1135), Count of Looz (Loon) (1078-1135), Count of Hesbaye, and Lord 
of Horn, son of Emmo, Count of Loon, and Suanhildis, daughter of Dirk III, Count of 
Holland, and his wife Othelandis.

He was an ally of Henry of Verdun and Otbert, both bishops of Liège. In 1078, he 
endowed the Collegiate Church of Huy and that of St. John at Liège.

In 1088, he spoke on the request of Bishop Henry of Verdun to end a conflict in the 
Abbey of St. Truiden where the bishop and emperor Henry IV had both appointed a 
successor abbot. As a result of his diplomacy, the emperor transferred the authority of 
the abbey of Sint-Truiden from Henry I, Duke of Lower Lorraine, to Arnold. Arnold 
forced Henry and his ally Godfrey of Bouillon, to withdraw from the monastery. The 
domain of Arnold expanded with the County of Rieneck by his marriage to Agnes.

Arnold married Agnes von Mainz, daughter of Gerhard I, Count of Rieneck, and Helwig 
von Bliescastel. Sources disagree on their number of children, but are believed to 
include:
Gerard (d. 1103), possibly Count of Looz for a brief period
Arnold II, Count of Looz
Gertrude van Loon (1100-1154), married to Hugo XI, Count of Dagsburg. Their son 
was Hugo XII, Count of Dagsburg, who married Luitgarde, widow of Godfrey II, Count 
of Louvain. She was daughter of Berengar II of Sulzbach, and sister of Gertrude von 
Sulzbach, wife of Conrad III of Germany, and Bertha, wife of Manuel I Comnenus, the 
emperor of Byzantium. Their granddaughter was Gertrude of Dagsburg, wife of 
Theobald I, King of Navarre.
Agnes van Loon (b. ca 1100), married Gerhard IV, Count of Jülich
Beatrix van Loon (d. after 1132), married Arnout III, Count of Aarschot and had issue.

While the question of Gerard’s countship remains, it is believed the Arnold was 
succeeded by his son Arnold as Count of Looz upon his death.

Parents
____ Emmo (Immo) IV (ABT 1035 - 17 Jan 1078)
VON HORNES Irmengard (ABT 1035 - )

Siblings
____ Arnold (Arnulf) (ABT 1075 - 1135)

Marriage To VON MAINZ Agnes (ABT 1105 - )
    m. ABT 1120 

Notes

Parents
____ Gerhard (ABT 1085 - AFT 1127)
OF BLIESKASTEL Hedwig (ABT 1086 - )

Children by VON MAINZ Agnes ABT 1105 - 
____ Louis I (ABT 1122 - 11 Aug 1171)

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