1 Chronicles 2:45

Overview - 1 Chronicles 2
The sons of Israel.
The posterity of Judah by Tamar.
13 The children of Jesse.
18 The posterity of Caleb the son of Hezron.
21 Hezron's posterity by the daughter of Machir.
25 Jerahmeel's posterity.
34 Sheshan's posterity.
42 Another branch of Caleb's posterity.
50 The posterity of Caleb the son of Hur.
Treasury of Scripture Knowledge

1 Chronicles 2:45  (King James Version)
And the son of Shammai was Maon: and Maon was the father of Bethzur.

Beth-zur was situated in the tribe of Judah, twenty miles south from Jerusalem, towards Hebron, according to Eusebius. It was fortified by Rehoboam, (2 Ch 11:7 and was a fortress of great consequence, principally in the time of the Maccabees
1 ; Mac 4:28 6:7 etc.
Joshua 15:58