John II OF HOLLAND , Count of Hainaut, Holland, and Zeeland.

  General Notes:

https://en.wikipedia.org/wiki/John_II,_Count_of_Holland
John II, born 1247, was the oldest son of John I of Avesnes and Adelaide of Holland, daughter of Floris IV, Count of Holland. He was Count of Hainaut from 1280 to his death and Count of Holland from 1299 until his death. John continued the war between the House of Dampierre and the House of Avesnes against Count Guy of Flanders for imperial Flanders.

John II became count of Holland in 1299 upon the death of his maternal cousin John I. The personal union he established between Hainaut and Holland\endash Zeeland lasted for another half-century.

John married Philippa OF LUXEMBURG before 1280. (Philippa OF LUXEMBURG was born in 1252 and died on 6 Apr 1311.)