Common grave

A potter's field, paupers' grave or common grave is a place for the burial of unknown or indigent people. Potter's field is of Biblical origin, referring to a ground where clay was dug for pottery, later bought by the high priests of Jerusalem for the burial of strangers, criminals and the poor.

The term comes from Matthew 27:3-27:8 in the New Testament of the Bible, in which Jewish priests take 30 pieces of silver returned by a remorseful Judas:

Then Judas, who betrayed him, seeing that he was condemned, repenting himself, brought back the thirty pieces of silver to the chief priests and ancients, saying: "I have sinned in betraying innocent blood." But they said: "What is that to us? Look thou to it." And casting down the pieces of silver in the temple, he departed, and went and hanged himself with a halter. But the chief priests, having taken the pieces of silver, said: "It is not lawful to put them into the corbona, because it is the price of blood." And after they had consulted together, they bought with them the potter's field, to be a burying place for strangers. For this the field was called Haceldama, that is, the field of blood, even to this day.

The site referred to in these verses is traditionally known as Akeldama, in the valley of Hinnom, which was a source of potters' clay. After the clay was removed, such a site would be left unusable for agriculture and thus might as well become a graveyard for those who could not be buried in an orthodox cemetery. This may be the origin of the name. A field where potters dug for clay would also be "conveniently already full of trenches and holes."

The author of Matthew was drawing on earlier Biblical references to potters' fields. The passage continues, with verses 9 and 10:-

Then what the prophet Jeremiah had said came true: "They took the thirty silver coins, the amount the people of Israel had agreed to pay for him, and used the money to buy the potter's field, as the Lord had commanded me."

This is a free quotation from Zechariah 11:12-13. However, Matthew attributes the quote to Jeremiah. The author of Matthew may have been mistaken. There are two other possible reasons for the reference. First, Jeremiah also speaks of buying a field, in Jeremiah 32:6-15. That field is a symbol of hope, not despair as mentioned in Matthew, and the price is 17 pieces of silver. The author of Matthew could have combined the words of Zechariah and Jeremiah, while only citing the "major" prophet. Secondly, "Jeremiah" was sometimes used to refer to the Books of the Prophets in toto as "The Law" is sometimes used to refer to Moses' five books – Genesis through Deuteronomy, the Pentateuch.

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