Hereditary lords · Deheubarth · as at first light, 1 January 1200

Cantref Bychan

A younger son of the Lord Rhys holding the castle of Llandovery and Cantref Bychan, the upper Tywi with Hirfryn, Perfedd and Is Cennen, up against the Braose lordship of Brecon.

He is killed in Carnwyllion in July 1201 and Gruffydd takes his land.

Who he is

Name
Maredudd ap Rhys
Title
Lord of Llandovery and Cantref Bychan
Since
Not pinned (after 1197)
Born
Not pinned (a young son of the Lord Rhys; the chronicle calls him a youth of great promise)
Family
Son of the Lord Rhys; with Rhys Gryg he conspired against their father in 1195 and was imprisoned at Ystrad Meurig.
Confidence
medium

Brut (death in 1201 and Gruffydd's taking of his castle of Llandovery and Cantref Bychan); Wikipedia (Rhys Gryg).

Overlord

None in practice; close to Gruffydd

What it holds

  • Llandovery castle
  • Cantref Bychan: the commotes of Hirfryn, Perfedd and Is Cennen (with the rock of Carreg Cennen)

How it was acquired

Share of his father's inheritance (date not pinned).

Allies and rivals

Brother and ally of Gruffydd; the Braose of Brecon and the Londres of Kidwelly are his English neighbours.

How things stand that morning

Holds Llandovery and Cantref Bychan.

Wealth

Upland cattle, the Tywi crossings.

Military

Llandovery castle (once Richard FitzPons's, Welsh since 1158).

Threats

  • The Londres of Kidwelly in Carnwyllion
  • Braose from Brecon

What the year holds

What happened next, if nothing in play changes it. Each event carries what it depends on and what would stop it.

  1. July 1201Killed in Carnwyllion; Gruffydd takes Llandovery and all Cantref Bychan.Depends on: A raid into Carnwyllion Stopped by: Maredudd staying at home

Places of note

  • Llandovery castle: His castle

Where the sources disagree

Evidence: His holding is known from the chronicle's notice of his death.

On the map: Cantref outline approximate.

Primary sources for Deheubarth

Chronicles, registers, sagas and inscriptions written in or near 1200 that cover this entry. Each has its own page with editions, translations and where to read it.

Sources and studies

  1. Brut y Tywysogion (Chronicle of the Princes), as cited in the Wikipedia and DWB articles
  2. Wikipedia: Rhys Gryg
  3. Wikipedia: Llandovery Castle

Last revised 4 November 2026. Published 4 November 2026. Suggest a correction on the OMNIA Discord.