John, I Count of Hainaut

1218 - 1257  (39 years)

• Name	John , I Count of Hainaut  [1, 2, 3]
  Suffix	I Count of Hainaut
  Born	01 May 1218	Houffalize, Luxembourg, Belgium   [2]
  Gender	Male
  Died	24 Dec 1257	Valenciennes, Hainaut, France   [2]
  Notes	John I of Avesnes (May 1, 1218 - December 24, 1257) was the count of Hainaut from 1246 to his death. Born in Houffalize, he was the eldest son of Margaret II of Flanders by her first husband, Bouchard IV of Avesnes. As the marriage of Margaret and Bouchard was papally dissolved, he was considered illegitimate. His mother was remarried to William II of Dampierre and bore more children who could claim her inheritance. Thus, John and his brother Baldwin undertook to receive imperial recognition of their legitimacy and did so from the Emperor Frederick II in March 1243. On 5 December 1244, Margaret inherited Flanders and Hainaut and designated her eldest son by her second husband, William III of Dampierre, as her heir. Immediately a war, called the War of the Succession of Flanders and Hainault, was set off over the rights of inheritance, pitting John against William. After two years of fighting, in 1246, Louis IX of France intervened to settle the conflict. He granted Hainaut to John and Flanders to William. However, Margaret refused to hand Hainaut over to John. On 6 June 1251, William of Flanders was assassinated and it was shown that the Avesnes family had financed the crime. On 4 July 1253, John defeated the armies of Margaret and her second Dampierre son, Guy, at the Battle of West-Capelle. Guy was imprisoned and Margaret agreed to sell her rights to Hainaut to Charles of Anjou if he would reconquer it from John. John's brother-in-law William II, Count of Holland, who had been elected German King (or "King of the Romans"), was convinced to grant Hainaut (an imperial fief) and those Flemish lands within the Empire to John. Charles was defeated and King Louis, returning from the Seventh Crusade, ordered his brother to abide by his arbitration of 1246. On 22 November 1257, Guy finally relinquished Hainaut, but John died on Christmas Eve in Valenciennes. Family and children He married Adelaide of Holland in 1246 and had the following issue: John II, Count of Hainaut and Holland (1247-1304) Joanna, Abbess of Flines (died 1304) Bouchard, Bishop of Metz (1251-1296) Guy, Bishop of Utrecht (1253-1317) William, Bishop of Cambrai (1254-1296) Floris, stadholder of Zeeland and Prince of Achaea
  Person ID	I5246	Bosdet Genealogy
  Last Modified	16 May 2013

  
  

  Father	Bouchard, IV of Avesnes,   b. 1182,   d. 1244, Rupelmonde, Oost-Vlaanderen, Belgium  (Age 62 years)
  Relationship	Natural
  Mother	Margaret, II Countess of Flanders,   b. 02 Jun 1202,   d. 10 Feb 1279/80  (Age 77 years)
  Relationship	Natural
  Family ID	F2059	Group Sheet

  
  

  Family	Adelaide of Holland,   d. 1284
  Married	09 Oct 1246  [4]
  Children	1. John, II Count of Holland,   b. 1247,   d. 22 Aug 1304  (Age 57 years)
  Family ID	F2058	Group Sheet

  
  

• Sources

  [S174] Wikipedia, http://en.wikipedia.org/wiki/John_II,_Count_of_Hainaut. [S174] Wikipedia, http://en.wikipedia.org/wiki/John_I_of_Avesnes. [S174] Wikipedia, http://en.wikipedia.org/wiki/John_I,_Count_of_Hainaut. [S174] Wikipedia, http://en.wikipedia.org/wiki/Adelaide_of_Holland.