Count Johan I (XII) of Loon

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Count Johan I (XII) of Loon

Dutch: Graaf Johan I (XII) van Loon, French: Comte Jean I (XII) de Looz, German: Count Johann von Burg Lohn
Also Known As: "Lutz/"
Birthdate: (51)
Death: January 19, 1278 (47-55)
Immediate Family:

Son of Count Arnold IV (XI) of Loon and Johanna, gravin van Chiny
Husband of Isabeau de Montmirail, dame de Condé en Brie and Mathilde von Jülich
Father of Jan II van Loon, seigneur d'Agimont; Jacquemin d'Agimont, Warcq et Givet; Maria I van Loon and Graaf Arnold V (XIII) van Loon Quabeck Chiny
Brother of Juliana van Loon, Dame d'Amblise; Margareta van Loon; Aleidis van Loon ; Count Louis of Loon Chiny; Elisabeth van Loon and 3 others

Occupation: Comte, de Looz
Managed by: Bengt-Olof Evrell
Last Updated:

About Count Johan I (XII) of Loon,_Count_of_Looz John I, Count of Looz

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John I (Jean) (d. 1278 or 1279), Count of Looz and Count of Chiny, eldest son of Arnold IV, Count of Looz and Chiny, and Jeanne, Countess of Chiny. He succeeded his father in 1272 or 1273, as the Count of Looz and Chiny. Virtually nothing is known about his reign.

He first married, in 1258, Matilda, daughter of William IV, Count of Jülich, and Matilda of Gelderland. Their children were: Arnold V, Count of Looz and Count of Chiny (as Arnold II) Louis de Looz William, Seigneur of Neufchatel and Ardenne.

Widowed, he married secondly, in 1269, Isabelle de Conde (d. after 1280), daughter of Jacques, Seigneur of Conde and Bailleul, and his wife Agnes of Rœulx. Their children were:: John II (1270-1311), Seigneur of Agimont, Givet and Warcq, married Marie, daughter of Raoul de Nesle and Alix de Roye (see House of Nesle) Jacques (Jacquemin) (d. February 27, 1330), Canon of Liege.

Upon his death, he was succeeded as Count of Chiny by his brother Louis, and as Count of Looz by his son Arnold.


Settipani, Christian, La Préhistoire des Capétiens (Nouvelle histoire généalogique de l'auguste maison de France, vol. 1), Villeneuve d'Ascq, éd. Patrick van Kerrebrouck, 1993, 545 p.

Thonissen, JJ., Arnold IV, Royal Academy of Belgium, National Biography, Vol. 1, Brussels, 1866

Arlette Laret-Kayser, Entre Bar et Luxembourg : Le Comté de Chiny des Origines à 1300, Bruxelles (éditions du Crédit Communal, Collection Histoire, série in-8°, n° 72), 1986

Medieval Lands Project, Upper Lotharingian Nobility, Comtes de Looz

John I of Looz , died on 19 January 1278 . He is the eldest son of Arnulf IV , and of Jeanne de Chiny .

He succeeded his father in 1272 or 1273 , as Count of Looz and Chiny . 
He married in the first marriage about 1258 , Mathilde de Juliers, daughter of William IV , count of Juliers , and Mathilde de Gueldre , of whom: 
Arnoul V (1260 † 1327), Count of Looz and Chiny, 
Guillaume, lord of Neufchâtel in the Ardennes , whose daughter Marie, marries Evrard I of La Marck-Arenberg . 
Widow, he remarried, about 1269, to Isabelle de Condé (+ after 1280), Dame de Morialme , daughter of Jacques, Lord of Condé , Bailleul , Morialme, etc., and his wife Agnes de Roeulx , 
John II (1270 † 1311), lord of Agimont , Warcq and Givet , grandfather of the counts of Looz-Agimont, who form a particular line of the elder branch of the house of Looz, and later become the attorneys of the Hesbaye , 
Jacques, or Jacquemin (+ 27 February 1330), canon capitular of Liège . 
Foudation for Medieval Genealogy: Jean I de Looz 

Jan van Loon (-1279)


 John I of Loon  
Count of Loon  
Period   1273-1279  
Predecessor   Arnold IV  
Successor   Arnold V  

Father   Arnold IV van Loon  
Mother   Johanna van Chiny  
John I of Loon (d. 1279 ) was the eldest son of Count Arnold IV van Loon .  In 1273 he succeeded his father as the twelfth count of Loon . 
John married his first wife Mathilde van Gulik , daughter of Count William IV of Jülich .  Therefore he was also in possession of Heinsberg , and Lion Mountain .  He also received the title "van Gulik.  After his death in 1279 his son succeeded Arnold him as Mr van Loon. 
He later married in 1266 with Isabella Condé (ca. 1245), the daughter of John II of Montmirail 1st Mr Condé .  From his second marriage were born: 
Jan III van Loon Mr Agimont (1268-1310), they married in 1285 with Marie Nesle (1270-1328).  She was the daughter of Jan van Nesle count of Soison (1240-1300) and Marie Oudenaarde Lady of Chimay (1246-1290).