Smith's Bible Dictionary (1863)
(feminine of Shimri, vigilant), a Moabitess, mother of Jehozabad, one of the assassins of King Joash. (2 Chronicles 24:26) In (2 Kings 12:21) she is called Shomer. (B.C. 839.)
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
SHIM'RITH (watchful), a Moabitess, mother of Jehozabad, one of the murderers of King Joash, 2 Chr 24:26; called Shomer in 2 Kgs 12:21.
Hitchcock's Bible Names (1869)
Shimron, same as Shimri