John II of Châtillon second son of Louis I of Châtillon and Jeanne of Avesnes, was count of Blois

Count of Blois

The County of Blois was originally centred on Blois, south of Paris, France. One of the chief cities, along with Blois itself, was Chartres. Blois was associated with Champagne, Châtillon , and later with the French royal family, to whom the county passed in 1391...

 and lord of Avesnes from 1372 to 1381.

In February 1372, he married Mathilde of Guelders (d. 1384), the daughter and co-heir of Duke Reginald II of Guelders

Reginald II of Guelders

Reginald II of Guelders , called "the Black" , was Count of Guelders, and from 1339 onwards Duke of Guelders, and Zutphen, in the Low Countries, from 1326 to 1343...

, and became Lord of Schoonhoven

Schoonhoven

Schoonhoven is a city and municipality in the western Netherlands, in the province of South Holland. The municipality has a population of 12,195 , and covers an area of 6.96 km²...

 and Gouda

Gouda

Gouda is a city and municipality in the western Netherlands, in the province of South Holland. Gouda, which was granted city rights in 1272, is famous for its Gouda cheese, smoking pipes, and 15th-century city hall....

. He spent most of his career trying to seize Guelders from Mathilde's nephew William I of Guelders and Jülich.