Main Page | See live article | Alphabetical index Centuries: 1st century BC - 1st century - 2nd century Decades: 20s BC 10s BC 0s BC 0s 10s - 20s - 30s 40s 50s 60s 70s Years: 17 18 19 20 21 - 22 - 23 24 25 26 27 Events Births Valeria Messalina, third wife of Roman Emperor Claudius Deaths For the number 22, see twenty-two. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.