Bible dictionaries
Jairite
What Bible dictionaries say about “Jairite”, one article after the other.
International Standard Bible Encyclopedia (ISBE 1915)
ja'-er-it (ya'iri, "of Jair"): In 2Sa 20:26, Ira the Jairite is "chief minister unto David." He was a descendant of Jair who was a Manassite (Nu 32:41, etc.) and whose territory was in Gilead. Septuagint, Lucian, and Syriac suggest yattiri, "Jattirite," i.e. a native of Jattir mentioned in 1Sa 30:27 as one of the towns friendly to David when he was in Ziklag. It is not improbable that a native of Jattir would be given such a post by David.
International Standard Bible Encyclopedia — James Orr, general editor and contributors; CrossWire SWORD module ISBE 2.2
The article in ISBE 1915Smith’s Bible Dictionary
(descendant of Jair). The IRA THE JAIRITE was a priest (Authorized Version "chief ruler") to David (2 Samuel 20:26)
William Smith; revised by F. N. Peloubet and M. A. Peloubet; CrossWire SWORD module Smith 1.3
The article in Smith