Genesis 10:21

And sons were also born to Shem, the older brother of Japheth; Shem was the forefather of all the sons of Eber.

Note Or Shem, whose older brother was Japheth

Unto Shem also, the father of all the children of Eber, the brother of Japheth the elder, even to him were children born.

Children were also born to Shem (the elder brother of Japheth), the father of all the children of Eber.

And unto Shem, the father of all the children of Eber, the elder brother of Japheth, to him also were children born.