11 dated entries naming Vilnius, drawn from 11 separate years between 1323 CE and 2009 CE. Nothing here is written by us: each line is the sentence a Wikipedia year article used, and the link beside it opens the exact revision.
1323January 25 – Vilnius, now the capital of Lithuania is first mentioned as a city, when the second of the Letters of Grand Duke Gediminas of the Duchy of Lithuania are sent to German cities inviting German Jews and other Germans to resettle in the city of "Vilna".source
1330Vilnius, Lithuania receives its coat-of-arms, granted to the city in the seventh year of its existence.source
1388March 12 – Pope Urban VI issues a papal bull permitting the Lithuanian capital, Vilnius, to establish a cathedral, acknowledging that pagan objects have been discarded and that Christianity has come to the Baltic nation.source
1390September 11 – Lithuanian Civil War: The coalition of Vytautas and the Teutonic Knights begins a 5-week siege of Vilnius. The Duke of Hereford (the future King Henry IV of England) is among the western European knights serving with the coalition.source
15th century
1432September 30 – A delegation from Poland, led by the Bishop of Kraków, Cardinal Zbigniew Oleśnicki, arrives in Vilnius and brings a message Grand Duke Sigismund that King Władysław II Jagiełło of Poland recognizes Sigismund as Lithuania's ruler, for life.source
16th century
1504Sheikh Ahmed, the final leader of the Great Horde, is last heard of as a Lithuanian prisoner at Vilnius until 1527 when he was released, after which he came to rule over the Astrakhan Khanate.source
17th century
1655July 31 – Russo-Polish War (1654–67): The Russian army enters the capital of the Grand Duchy of Lithuania, Vilnius, which it holds for 6 years.source
18th century
1742March 29 – Acting in his capacity of Grand Duke of Lithuania, Poland's King Stanisław August Poniatowski issues a proclamation allowing Jews in the Lithuanian capital of Vilnius to live anywhere except for two public streets, the Pilies street and the Galves Street.source
19th century
1898December 5 – A fire at a factory in the Russian city of Vilana (modern-day Vilnius in Lithuania) kills 15 women and girls, most of whom die after jumping from the windows.source
20th century
1941July 2 – A German SS unit arrives in Vilnius, Lithuania, and begins the Ponary massacre, the systematic execution of up to 100,000 people over the next three years.source
21st century
2009January 1 – Asunción, the capital of Paraguay, becomes the American Capital of Culture and Vilnius and Linz become the European Capitals of Culture.source