Editing 255

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Year '''255''' ('''[[Roman numerals|CCLV]]''') was a [[common year starting on Monday]] of the [[Julian calendar]]. At the time, it was known in Rome as the '''Year of the Consulship of Valerianus and Gallienus''' (or, less frequently, '''year 1008 ''[[Ab urbe condita]]'''''). The denomination 255 for this year has been used since the early medieval period, when the [[Anno Domini]] [[calendar era]] became the prevalent method in Europe for naming years.

== Events ==
<onlyinclude>

=== By place ===

==== China ====
* [[Sima Shi]] quells [[Guanqiu Jian]] and [[Wen Qin]]'s [[Guanqiu Jian and Wen Qin's Rebellion|rebellion]].
* [[March 23]] &ndash; Sima Shi passes away.
* [[Sima Zhao]], Sima Shi's younger brother, inherits his brother's authority.

=== By topic ===

==== Science ====
* [[Ma Jun (mechanical engineer)|Ma Jun]], Chinese mechanical engineer from [[Cao Wei]], invents the [[south-pointing chariot]], a path-finding directional [[compass]] vehicle that uses a [[Differential (mechanical device)|differential gear]], not [[magnetics]].
</onlyinclude>

== Births ==
* [[January 6]] &ndash; [[Pope Marcellus I|Marcellus I]], bishop of [[Ancient Rome|Rome]] (d. [[309]])
* [[Dorotheus of Tyre]], Syrian bishop and [[martyr]] (d. [[362]])
* [[Zhang Gui]], Chinese governor of the [[Jin dynasty (265–420)|Jin Dynasty]] (d. [[314]])
* [[Zuo Fen]], Chinese poet of the [[Jin dynasty (266–420)|Western Jin Dynasty]] (d. [[300]])
* [[Helena, mother of Constantine I|Saint Helena]], Roman empress who was the reputed discoverer of [[True Cross|Christ’s cross]] and mother of [[Constantine the Great|Emperor Constantine]] (d. 318)

== Deaths ==
* [[February 23]] &ndash; [[Guo Huai]] (or '''Boji'''), Chinese general
* [[March 16]] &ndash; [[Guanqiu Jian]], Chinese general and politician
* [[March 23]] &ndash; [[Sima Shi]], Chinese general and [[regent]] (b. [[208]])<ref>{{Cite book |last=Declercq |first=Dominik |title=Writing against the state: political rhetorics in third and fourth century China |date=1998 |isbn=9004103767 |location=Leiden |pages=123}}</ref>
* [[Fu Gu]] (or '''Lanshi'''), Chinese official and politician (b. [[209]])
* [[Liu Zan]] (or '''Zhengming'''), Chinese general (b. [[183]])
* [[Sun Luyu]] (or '''Xiaohu'''), Chinese princess

== References ==
{{Reflist}}

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[[Category:255| ]]