Beth-zur - Now Beit-sur, on the road from Jerusalem to Hebron Joshua 15:58.
By “the sepulchres of David” must be understood the burial place in which David and the kings his descendants to the time of Hezekiah were interred. This was an excavation in the rock, in the near vicinity of the temple Ezekiel 43:7-9, and on its western side. The position of the burial-place was well known until the destruction of the city by Titus; but modern research has not yet discovered it.
The pool - Probably that made by Hezekiah in the Tyropoeon valley, west of the temple area (marginal reference).