# Constantine is proclaimed emperor at York (306)

URL: https://english-history.com/timeline/306-constantine-is-proclaimed-emperor-at-york
Categories: ruler-change, main-event

After Constantius Chlorus died in York, his troops acclaimed Constantine as emperor. Within the broader Roman Britain period, conquest, provincial administration, urbanization, frontier warfare and the gradual weakening of imperial rule reshaped the island. This event is placed at AD 306 in the chronology so it can be read alongside the political, military, social and cultural changes around it. The proclamation linked Roman Britain directly to the rise of Constantine the Great.

## Why it matters
The proclamation linked Roman Britain directly to the rise of Constantine the Great.

Ruler at the time: [Roman Britain](https://english-history.com/rulers/roman-britain)

## Sources
- [Wikipedia topic lookup — Constantine is proclaimed emperor at York](https://en.wikipedia.org/wiki/Special:Search?search=Constantine+is+proclaimed+emperor+at+York&go=Go)
- [Encyclopaedia Britannica topic lookup — Constantine is proclaimed emperor at York](https://www.britannica.com/search?query=Constantine+is+proclaimed+emperor+at+York)
- [Wikipedia — Timeline of British history](https://en.wikipedia.org/wiki/Timeline_of_British_history_%28before_1000%29)
- [Encyclopaedia Britannica — Roman Britain topic search](https://www.britannica.com/search?query=Roman%20Britain)