1. CONAN¹ DE MONTFAUCON was born between 920 and 1076, and died between 980 and 1186. ^[4]
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RICHARD I2 DE MONTFAUCON, d. in 1090.

2. RICHARD I² DE MONTFAUCON (Conan¹), son of (1) Conan¹ DE MONTFAUCON, was born between 980 and 1076, and died in 1090^[3]. ^[4]
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AMADEUS I3 DE MONTFAUCON, d. in 1110.

3. AMADEUS I³ DE MONTFAUCON (Richard I², Conan¹), son of (2) Richard I² DE MONTFAUCON, was born between 1000 and 1091, and died in 1110^[3]. ^[4]
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COUNT RICHARD II4 OF MONTFAUCON, d. in 1150; m. in 1148 AGNES DE MONTBELIARD, d. in 1148[3].

4. COUNT RICHARD II⁴ OF MONTFAUCON (Amadeus I de MONTFAUCON³, Richard I², Conan¹), son of (3) Amadeus I³ DE MONTFAUCON, was born between 1040 and 1111, and died in 1150^[3]. He married in 1148, AGNES DE MONTBELIARD^[3], who died in 1148^[3]. ^{[2, 4]}
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AGNES5 DE MONTFAUCON, m. in 1166 (HA-4) COUNT ÉRARD II OF BRIENNE, d. in Acre, Israel on 8 Feb. 1191[1], son of (HA-3) Count Gauthier II and Adele (_____).

5. AGNES⁵ DE MONTFAUCON (Richard II of MONTFAUCON⁴, Amadeus I de MONTFAUCON³, Richard I², Conan¹), daughter of (4) Count Richard II⁴ and Agnes (de MONTBELIARD), was born between 1130 and 1149, and died between 1185 and 1258. She married in 1166, (HA-4) COUNT ÉRARD II OF BRIENNE^[1], son of (HA-3) Count Gauthier II and Adele (_____), who died on 8 Feb. 1191 in Acre^[1]. ^{[4, 5]}
Richardson's "Plantagenet Ancestry" shows Agnes as daughter of Amadeus de Montfaucon, Count of Montbeliard.^[5]
Child: See (HA-4) Count Érard II of BRIENNE