6 dated entries naming Turku, drawn from 6 separate years between 1229 CE and 1812 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.
1229January 23 – The episcopal seat is moved from Nousiainen to Koroinen (located near the current centre of Turku) by the permission of Pope Gregory IX. The date is starting to be considered as the founding of Turku.source
16th century
1554Mikael Agricola becomes the bishop of Turku.source
17th century
1640July 15 – The first university of Finland, the Royal Academy of Turku, is inaugurated in Turku.source
1676An Åbo Lantdag (assembly) meets in Turku, Finland.source
19th century
1808June 12 – Finnish War: A landing of Swedish troops at Ala-Lemu, near Turku, fails.source
1812April 8 – The capital of Finland is moved from Turku to Helsinki, when Russia's Tsar Alexander I signs an edict moving the Government Council of the Grand Duchy of Finland.source