Jamieson, Fausset and Brown on 2 Kings 15:29

29. in the days of Pekah king of Israel came Tiglath-pileser--This monarch, who succeeded Pul on the throne of Assyria, is the only one of all the kings who does not give his genealogy, and is therefore supposed to have been an usurper. His annals have been discovered in the Nimroud mound, describing this expedition into Syria. The places taken are here mentioned as they occurred and were conquered in the progress of an invasion.