Because of Locking his father's profile remark here "His father is Gwijde (and in french: "Guy") van Blois" :

https://nl.wikipedia.org/wiki/Gwijde_I_van_Blois

....../.....

Lodewijk is Louis II ??? https://nl.wikipedia.org/wiki/Lodewijk_I_van_Blois

Louis II, Count of Blois

http://en.wikipedia.org/wiki/Louis_I_of_Ch%C3%A2tillon

 (Redirected from Louis I of Châtillon)

Louis I of Châtillon (d. August 26, 1346, battle of Crécy), son of Guy I of Blois-Châtillon and Marguerite of Valois, was count of Blois and lord of Avesnes 1342–1346.

In 1340 in Soissons, he married Jeanne of Avesnes, Countess of Soissons (d. 1350), daughter of John of Avesnes, Lord of Beaumont. They had three children:

Louis (d. 1372)

John (d. 1381)

Guy (d. 1397)

He was killed at the Battle of Crécy.