And Manasseh slept with his fathers, and was buried in the garden of his own house, in the garden of Uzza: and Amon his son reigned in his stead. (2 Kings 21:18)
Both Manasseh and his son Amon (v. 26) were buried here. There is no further information available concerning this site. It was probably a garden formerly owned by a man named Uzza which was in the neighborhood of the palace gardens and was purchased for use as a burial plot.
Of his own house.
There is no record of any kings of Judah from Ahaz onward being buried in the sepulchers of the kings of Judah.