Madoc ap Uthyr

{{Short description|Legendary brother of King Arthur}}

In early Arthurian literature, Madoc ap Uthyr (also known as Madog or Madawg) is the son of Uther Pendragon, brother to King Arthur and father of Eliwlod. He is memorialized with "The Death Song of Madawg" ({{lang|cy|Marwnad Madawg}}) from the Book of Taliesin,[http://www.maryjones.us/ctexts/t41.html "The death-song of Madawg"][https://books.google.com/books?id=QQhBAQAAMAAJ&dq=Madoc+ap+Uthyr&pg=PA266 Miss Russell. "Notes on Welsh Legend", History of the Berwickshire Naturalists' Club, Volume 11, 1887]{{cite book|isbn=9781781889084|title=Arthur in Early Welsh Poetry |last1=Jones |first1=Nerys Ann |date=12 July 2019 |url=https://books.google.com/books?id=8nOiDwAAQBAJ |page=177 |series=Library of Medieval Welsh Literature}} which laments his death at Erof's hands; he is also mentioned in the poem Arthur and the Eagle.[http://www.maryjones.us/ctexts/eagle.html "Dialogue of Arthur and Eliwlod"]

A Madawg's grave is mentioned in {{lang|cy|Englynion y Beddau}}, which states:

{{Poem quote|Whose is the quadrangular grave

With its four stones around the front?

The grave of Madawg the intrepid warrior.[http://www.maryjones.us/ctexts/bbc19.html "Englynion y Beddau"]}}

Court poet Y Prydydd Bychan calls Madog both iniquitous and a celebrated lord and lists him among other heroic figures with the warning that this life is transitory.{{sfn|Jones|2019|pp=101, 107}}