Int. Standard Bible Encyclopedia ASSIR as'-er (accir, "captive"): (1) A Levite of the family of Korah (Exodus 6:24 1 Chronicles 6:22). (2) A son of Ebiasaph and grandson of Assir. Samuel was descended from him (1 Chronicles 6:23). (3) A son of Jeconiah, king of Judah, according to the King James Version and the Revised Version, margin and the American Revised Version, margin. It is a question whether the Assir of this passage (1 Chronicles 3:17) is not a common adjective modifying Jeconiah. The the American Standard Revised Version and the Revised Version (British and American) render it "the captive." It is to be noticed, however, that there is no definite article in the Hebrew.

Multi-Version Concordance Assir (5 Occurrences) Exodus 6:24 The sons of Korah: Assir, and Elkanah, and Abiasaph; these are the families of the Korahites. (WEB KJV JPS ASV BBE DBY WBS YLT NAS RSV NIV) 1 Chronicles 3:17 And the sons of Jeconiah; Assir, Salathiel his son, (KJV JPS DBY WBS YLT) 1 Chronicles 6:22 The sons of Kohath: Amminadab his son, Korah his son, Assir his son, (WEB KJV JPS ASV BBE DBY WBS YLT NAS RSV NIV) 1 Chronicles 6:23 Elkanah his son, and Ebiasaph his son, and Assir his son, (WEB KJV JPS ASV BBE DBY WBS YLT NAS RSV NIV) 1 Chronicles 6:37 the son of Tahath, the son of Assir, the son of Ebiasaph, the son of Korah, (WEB KJV JPS ASV BBE DBY WBS YLT NAS RSV NIV)