An Israeli archaeologist said he had unearthed what he believed were the 2,000-year-old remains of two tombs which had held a wife and daughter-in-law of the biblical King Herod.
Other findings announced by Ehud Netzer of Jerusalem's Hebrew University provided new evidence of the lavish lifestyle of the Roman-era monarch also known as the "King of the Jews".
Herod, a Roman-anointed king who ruled Judea from 37 BC until his death in 4 BC, has a special place in biblical history.
Herod rebuilt the Jewish temple in Jerusalem, making him a focus of study in the Jewish state.
The Gospel of Matthew says Herod ordered the Massacre of the Innocents, the killing of male infants in Jesus' birthplace of Bethlehem, out of fear of losing his throne.
Mr Netzer, an authority on Herodian excavations, showed reporters portions of two limestone sarcophagi he says had contained remains of one of Herod's wives, Malthace, and a daughter-in-law.
He said these findings supported his claims that another sarcophagus he found at the site last year had been Herod's tomb.
Some experts had said then, that the evidence seemed inconclusive.
Based on the additional sarcophagi he has found, and despite the absence of any inscriptions or documentation by the ancient Jewish historian Josephus Flavius, Mr Netzer said: "I would eat my hat if it were someone else's tomb."
At a visit to the dig site in Herodium, outside Jerusalem in the occupied West Bank, where one of Herod's palaces once stood, Mr Netzer showed reporters evidence of what he said was a mausoleum at the site, where the remains of the sarcophagi had been found.
Some bones were also found nearby but Mr Netzer could not verify they belonged to any of the Herod dynasty.
He said the remains of the monarch and his relatives likely disappeared when their tombs were smashed, possibly by Jewish rebels against the Romans from 66 to 72 AD.
He said his team was surprised when they came across further evidence of Herod's cushy lifestyle, a well-preserved mural of gazelles decorating walls of what Mr Netzer believes was luxury seating for a theatre.