Nielsen Hayden genealogy
Ancestors of Baudouin d'Avesnes
1219 - 1295 (~ 75 years) ┌── Nicholas d'Oisy ( - Between 1169 and 1171)(m. Bef 1150) =>
┌── Jacques d'Avesnes (1150 - 7 Sep 1191 Arsuf, Palestine)(m. 1180)
│ └── Matilda de la Roche (m. Bef 1150) =>
│
┌── Bouchard IV d'Avesnes (Abt 1181 - 7 Sep 1244)(m. Bef 23 Jul 1212)
│ │
│ │ ┌── Bouchard of Guise =>
│ └── Adela of Guise (m. 1180)
│ └── Alix
│
Baudouin d'Avesnes (Sep 1219 - 10 Apr 1295)
│
│ ┌── Baldwin V of Flanders (1150 - 17 Dec 1195)(m. Apr 1169) =>
│ ┌── Baldwin I of Flanders, Latin Emperor of Constantinople (Jul 1171 - 11 Jul 1205)(m. 6 Jan 1186)
│ │ └── Marguerite of Lorraine (Between 1140 and 1145 - 12 Nov 1194)(m. Apr 1169) =>
│ │
└── Margaret II of Flanders (Abt 1202 -
10 Feb 1280 bur.Abbey of Flines, Flines-lez-Raches, Hauts-de-France, France)(m. Bef 23 Jul 1212)
10 Feb 1280 bur.Abbey of Flines, Flines-lez-Raches, Hauts-de-France, France)(m. Bef 23 Jul 1212)
│
│ ┌── Henry I of Champagne (m. 1164) =>
└── Marie of Champagne (Abt 1174 - 9 Aug 1204)(m. 6 Jan 1186)
└── Marie of France (1145 France - 11 Mar 1198 Champagne, France)(m. 1164) =>