Hastings' Dictionary of the Bible
TELASSAR (‘Asshur’s hill or mound’). This city is mentioned with Gozan, Haran, and Rezeph, and is spoken of as a place inhabited by ‘the children of Eden’ ( 2 Kings 19:12 , Isaiah 37:12 ). The Assyrian inscriptions apparently mention two places so called, one being Til-ashshuri , mentioned by Tiglath-pileser iii., which had a renowned temple dedicated to Merodach, and is stated to have been a Babylonian foundation. The other, written Til-ashurri , is referred to by Esarhaddon as having been conquered by him (the people of MihrÃ¢nu, he seems to say, called it PitÃ¢nu ). It was inhabited by the people of Barnaku or Parnaku a name which Delitzsch points out as similar to the Parnach of Numbers 34:25 . This Till-ashurri is supposed to have lain near the land of Mitanni (Upper Mesopotamia), which would find support if MihrÃ¢nu be connected with the Mehru mentioned by Tukulti-Ninib (-Nirig) 1.
T. G. Pinches.
Easton's Bible Dictionary
Or Thelasar, (Isaiah 37:12 ; 2 Kings 19:12 ), a province in the south-east of Assyria, probably in Babylonia. Some have identified it with Tel Afer, a place in Mesopotamia, some 30 miles from Sinjar.