“The sons of Beriah were Heber and Malchiel, who was the father of Birzaith. Heber became the father of Japhlet, Shomer, Hotham, and their sister Shua.”
The children of Beriah were Heber and Malchiel according to Genesis, chapter 46, and Numbers, chapter 26, just as listed here. His descendants became the clan of the Heberites and the clan of the Malchielites. Somehow Beriah is more important since there is no mention of the children of his 3 brothers or sister. The son of Malchiel was Birzaith, who is mentioned here, but nowhere else in the biblical literature. Heber was the other son of Beriah who had 3 sons and 1 daughter. Japhlet just occurs here with his descendents. Shomer becomes Shemer in the next section. Hotham becomes Helem. There were 4 people with the name of Shua in biblical literature, 3 of them were female and one male.