Boyd’s Bible Dictionary:
(tumult). (1) (1 Chron. 1:1). [SETH.] (2) For Sheth (Num. 24:17), read “tumult,” as in Jeremiah 48:45.
Concise Bible Dictionary:
Son of Adam (1 Chron. 1:1). See SETH. The word occurs also in Numbers 24:17, where, instead of “children of Sheth,” it is better to read “sons of tumult;” that is, “tumultuous war will be destroyed” (compare Jer. 48:45).
Jackson’s Dictionary of Scripture Proper Names:
appointed: set : tumult (Num. 24:17)