1. COUNT UDO IN THE¹ WETTERAU was born between 821/2 and 978, and died between 881/2 and 1088. He married (LG-52) N.N. OF VERMANDOIS, daughter of (LG-42) Count Herbert I and (AEG-2) Bertha (de MORVOIS).
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HERBERT I2 OF GLEIBERG, b. about 950; d. in 992[1]; m. IRMENTRUDE _____.

2. HERBERT I² OF GLEIBERG (Udo in the WETTERAU¹), son of (1) Count Udo in the¹ and (LG-52) N.n. (of VERMANDOIS), was born between 881 and 978, and died in 992^[1]. He married IRMENTRUDE _____. ^[4]
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ERMENTRUDE3 OF GLEIBERG, b. about 960/1; d. about 1050; m. before 995[1] (ARJ-3) COUNT FREDERICK I OF LUXEMBOURG of Luxembourg, b. of Luxembourg[1] about 965[1], d. in 1019[1, 3], son of (ARJ-2) Count Siegfried and Hedwig (_____).

3. ERMENTRUDE³ OF GLEIBERG (Herbert I², Udo in the WETTERAU¹), daughter of (2) Herbert I² and Irmentrude (_____) OF GLEIBERG, was born between 929/30 and 981, and died between 985 and 1091. She married before 995^[1], (ARJ-3) COUNT FREDERICK I OF LUXEMBOURG of Luxembourg, son of (ARJ-2) Count Siegfried and Hedwig (_____), who was born about 965^[1] of Luxembourg^[1], and died in 1019^{[1, 3]}. ^{[1, 2, 4]}
Children: See (ARJ-3) Count Frederick I of LUXEMBOURG