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Silkworm eggs are smuggled to Constantinople

Monks who had lived in “Serinda”, beyond the peoples of India, brought silkworm eggs to Justinian so that the empire would no longer have to buy silk from its Persian enemies. So began sericulture in Byzantium, although the empire went on relying on imported raw silk for centuries.

Date
between 552 and 554exact date unknown: an interval is given
Place
Constantinopletoday: Istanbul, Turkey · Balkans and Anatolia
Participants
Justinian I, Byzantine Empire
Threads
Early medieval Europe (500–1000)
Also known as
Smuggling of silkworm eggs; Serinda; Серинда; Sericulture in Byzantium; Шелководство в Византии

Silk reached the empire through Persian intermediaries, whose control made it scarce and costly. Procopius relates in the last book of his Wars that “at about this time” (around 552) certain monks coming from India, who had long lived in a country called Serinda, promised Justinian that the Romans would no longer have to buy silk from the Persians. Silk, they explained, is made by worms; the worms cannot be carried alive, but their eggs can, and kept warm under dung they will hatch. Promised large rewards, the monks went back to Serinda, brought the eggs to Byzantium and raised the worms on mulberry leaves, and from then on, Procopius says, silk was produced in the land of the Romans. Another sixth-century historian, Theophanes of Byzantium, whose work survives only in a summary by Patriarch Photius, credits instead a Persian who carried the eggs from the land of the Seres in a hollow cane.

Where Serinda lay has long been debated: China, the Tarim Basin (especially Khotan), Sogdiana, Ceylon and northern India are among the candidates proposed. The monks are often thought to have belonged to the Church of the East (the “Nestorians”), but Procopius does not say so. Gang Wu (2024) argues that the method described in the Byzantine sources — eggs warmed under dung, moths allowed to emerge from the cocoons, which were then spun rather than reeled — most closely resembles the sericulture practised around Khotan.

Procopius tells the story among the events of about 552; the English Wikipedia and Wikidata date it to 552, the articles on Byzantine silk to 553–554. The episode did not free the empire from imports at once. Silk manufacture became an imperial monopoly, but, as Wu notes, Byzantium still relied heavily on imported raw silk until at least the 10th century, and Chinese silk was long considered of better quality. When envoys of the Turks came to Justin II — the first embassy, led by the Sogdian Maniakh, arrived in 568 seeking a direct silk trade (Menander) — the emperor, according to Theophanes of Byzantium, showed them how silkworms were bred and silk was made, to their astonishment.

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Related events

  • Reign of Kaleb of Aksumbetween 510 and 514 – between 530 and 542 · Africabefore silkworms reached Constantinople, Justinian asked the Aksumites to buy Indian silk so as to bypass Persia (Procopius)
  • Embassies of Maniakh and Zemarchus: the Turks ally with Byzantium568 – between 570 and 571 · Central and Northern AsiaJustin II showed the Turkish envoys how silkworms were bred, to their astonishment (Theophanes of Byzantium); the embassy of 568, led by the Sogdian Maniakh, came to trade silk (Menander)

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Sources

  1. Wikipedia (English): Smuggling of silkworm eggs into the East Roman Empire
  2. Wikipedia (English): Byzantine silk
  3. Wikipedia (English): Theophanes of Byzantium
  4. Wikipedia (Russian): Византийский шёлк
  5. Procopius. History of the Wars. Book VIII, ch. 17 / transl. H. B. Dewing. — Cambridge (Mass.): Harvard University Press, 1928. — (Loeb Classical Library).
  6. Wu G. Mapping Byzantine Sericulture in the Global Transfer of Technology // Journal of Global History. — 2024. — Vol. 19, no. 1. — P. 1–17.
  7. Muthesius A. Byzantine Silk Weaving: AD 400 to AD 1200. — Vienna: Fassbaender, 1997.
  8. Blockley R. C. The History of Menander the Guardsman. — Liverpool: Francis Cairns, 1985.
  9. Wikidata: Q16931947