1. CONAN¹ DE MONTFAUCON was born between 919/20 and 1076, and died between 979/80 and 1186. ^[4]
Child:

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RICHARD I2 DE MONTFAUCON, b. about 1050; d. in 1090[3].

2. RICHARD I² DE MONTFAUCON (Conan¹), son of (1) Conan¹ DE MONTFAUCON, was born between 979 and 1076, and died in 1090^[3]. ^[4]
Child:

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AMADEUS I3 DE MONTFAUCON, b. about 1050; d. in 1110[3].

3. AMADEUS I³ DE MONTFAUCON (Richard I², Conan¹), son of (2) Richard I² DE MONTFAUCON, was born between 999 and 1091, and died in 1110^[3]. ^[4]
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COUNT RICHARD II4 OF MONTFAUCON, b. about 1111; d. in 1150[3]; m. in 1148[3] 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 1039 and 1111, and died in 1150^[3]. He married in 1148^[3], AGNES DE MONTBELIARD, who died in 1148^[3]. ^{[2, 4]}
Child:

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AGNES5 DE MONTFAUCON, b. about 1140; d. about 1220; m. in 1166[1] (HB-4) COUNT ÉRARD II OF BRIENNE, d. in Acre, Israel[1] on 8 Feb. 1191[1], son of (HB-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 1129/30 and 1149, and died between 1185 and 1258. She married in 1166^[1], (HB-4) COUNT ÉRARD II OF BRIENNE, son of (HB-3) Count Gauthier II and Adele (_____), who died on 8 Feb. 1191^[1] in Acre^[1]. ^[4]
Richardson's "Plantagenet Ancestry" shows Agnes as daughter of Amadeus de Montfaucon, Count of Montbeliard.^[5]
Child: See (HB-4) Count Érard II of BRIENNE