1 Chronicles 1:50
And when Baal-hanan was dead, Hadad reigned in his stead: and the name of his city was Pai; and his wife’s name was Mehetabel, the daughter of Matred, the daughter of Mezahab. And when Baal-hanan was dead, Hadad reigned in his stead: and the name of his city was Pai; and his wife’s name was Mehetabel, the daughter of Matred, the daughter of Mezahab.
1 Chronicles 1:50 belongs to the Bible's detailed genealogical and historical records.
Its genealogy was preserved by God's direction because accurate genealogies were necessary to the development and certainty of the gospel.
The value or meaning of such records is not always immediately apparent.
Such records can interest scholars studying the origin and distribution of races.