# 631 BC

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The year **631 BC** was a year of the [pre-Julian Roman calendar](/source/Roman_calendar). In the [Roman Empire](/source/Roman_Empire), it was known as **year 123 *[Ab urbe condita](/source/Ab_urbe_condita)***. The denomination 631 BC for this year has been used since the early medieval period, when the [Anno Domini](/source/Anno_Domini) [calendar era](/source/Calendar_era) became the prevalent method in Europe for naming years.

## Events

- [Cyrene](/source/Cyrene,_Libya), a Greek colony in present-day [Libya](/source/Libya), [North Africa](/source/North_Africa), is founded (approximate date).
- [Sadyattes](/source/Sadyattes) becomes king of [Lydia](/source/Lydia).

## Deaths

- [Ashurbanipal](/source/Ashurbanipal), Assyrian king (approximate date)

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Adapted from the Wikipedia article [631 BC](https://en.wikipedia.org/wiki/631_BC) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/631_BC?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.