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Romans sacrificing a pig, a sheep, and a bull during a suovetaurilia

Lustratio was an ancient Greek and ancient Roman purification ceremony.[1] It included a procession and in some circumstances the sacrifice of a pig (sus), a ram (ovis), and a bull (taurus) (suovetaurilia).

One reason for a Lustratio was to rid newborn children of any harmful spirits that may have been acquired at birth. The ceremony took place when the baby boy reached the age of nine days, or if a girl, eight days old.[2] In the ceremony, the procession traced a magical boundary around the child to be purified. At the end of the ceremony, if the child was male, he was presented with a small charm, usually of gold, called a bulla and kept in a leather bag around the boy's neck. This bulla would be worn until the boy became a man and exchanged the child's purple-lined toga toga praetexta for the plain toga virilis of an adult.[3] The Lustratio ceremony culminated with the naming of the child, the name being added to official Roman registers, and the observation of a flight of birds in order to discern the child’s future.[2]

Lustratio ceremonies were also used to purify cities, objects or buildings, and on some occasions to purify an area where a crime had been committed. One notable occasion was a Lustratio held to purify Athens by Epimenides of Crete, after the Cylonian massacre.[4] Lustratio ceremonies were also used to bless crops, farm animals, new colonies, and armies before going into battle or passing into review. In the latter case, troops were often ordered to the coastline, where half of the sacrifice would be thrown into the sea and the other half burnt on an altar.[4] An example of this was the army of Macedon. Lustratio was performed by a dog being cut in half, and the army assembling between the location of the two halves, which were flung in opposite directions.[5]

Instructions on the Lustratio performed for the Roman town of Iguvium illustrate that the ceremony consisted of a procession of priests and sacrificial victims around the town's citadel, stopping at the three gates to the citadel, where the sacrifices took place. The gates were considered as the weak points which required strengthening.[6]

According to Zosimus, the pagan historian of late antiquity, after Constantine the Great had his son Crispus and his own wife Fausta killed, he approached priests of the old religion, and finding that they were unwilling to offer him lustration for these deeds, went over to the Christian religion after theirs offered him absolution.[7]

See also[edit]


  1. ^ Heitland p. 224
  2. ^ a b Goldsworthy p. 42
  3. ^ Goldsworthy p. 75
  4. ^ a b Murray p. 719
  5. ^ Cic. de Divin. i.45; Barth, ad Stat. Theb. iv. p1073
  6. ^ Evans p. 183
  7. ^ Zosimus p. 151


  • Evans, Arthur Anthropology and the Classics, 1967 ISBN 0-7146-1020-8
  • Goldsworthy, Adrian Caesar, 2006 ISBN 978-0-7538-2158-9
  • Heitland, William Emerton The Roman Republic, 1909
  • Murray, John A Dictionary of Greek and Roman Antiquities, 1875
  • Zosimus, New History. London: Green and Chaplin (1814). Book 2.

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