Polity Kingdom of Dyfed

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Was one of several Welsh kingdoms that emerged in 5th-century post-Roman Britain.

Establishment

  • January 411: The Kingdom of Dyfed was one of several Welsh petty kingdoms that emerged in 5th-century sub-Roman Britain in southwest Wales.

Chronology

Interactive Chronologies with maps are available in the section Changes Navigation

1. End of Roman rule in Britannia and Armorica

The inhabitants of Britannia and Armorica expelled the Romans.

  • January 411: The Kingdom of Dyfed was one of several Welsh petty kingdoms that emerged in 5th-century sub-Roman Britain in southwest Wales.

2. Further events (Unrelated to Any War)

  • January 681: The region known as Ystrad Tywi is conquered by the Kingdom of Seisyllwg.

Disestablishment

  • January 921: In 920 Hywel merged Seisyllwg with the Kingdom of Dyfed to form the new kingdom of Deheubarth.