Boyd’s Bible Dictionary:
(thorn). (1) A town in the mountains of Judah (Josh. 15:48). (2) Residence of Tola, the judge, in Mount Ephraim (Judg. 10:1-2). (3) Son of Michah (1 Chron. 24:24).
Concise Bible Dictionary:
1. Son of Michah, a Levite (1 Chron. 24:24).
2. City in the mountains of Judah (Josh. 15:48). Identified by some with ruins at Somerah, 31° 25' N, 34° 56' E.
3. City in Mount Ephraim, the residence of Tola, one of the judges (Judg. 10:1-2). Not identified.
Jackson’s Dictionary of Scripture Proper Names:
keeping: guarding