Riderch II was, according to the Harleian genealogies

Harleian genealogies

The Harleian genealogies are a collection of Old Welsh genealogies preserved in British Library, Harleian MS 3859. Part of the Harleian Collection, the manuscript, which also contains the Annales Cambriae and a version of the Historia Brittonum, has been dated to c. 1100, although a date of c.1200...

, the son of Eugein II

Eugein II of Alt Clut

Eugein II may have been ruler of Alt Clut, the Brythonic kingdom later known as Strathclyde, for some time in the late-8th century. He is known only from the Harleian genealogies, which indicate that he was the son of King Dumnagual III of Alt Clut; there is no direct evidence that he ruled as king...

, the son of King Dumnagual III of Alt Clut

Dumnagual III of Alt Clut

Dumnagual III was the ruler of Alt Clut, later known as Strathclyde , for some time in the mid-eighth century . According to the Harleian genealogies, he was the son of Teudebur, one of his predecessors as king...

. He is known only from this source, and there is no direct evidence he was king of Alt Clut

Kingdom of Strathclyde

Strathclyde , originally Brythonic Ystrad Clud, was one of the early medieval kingdoms of the celtic people called the Britons in the Hen Ogledd, the Brythonic-speaking parts of what is now southern Scotland and northern England. The kingdom developed during the post-Roman period...

 (the region around Dumbarton Rock), although he is usually regarded as such by scholars. The Harleian genealogies indicate he was the father of Dumnugual IV

Dumnagual IV of Alt Clut

Dumnagual IV was a 9th-century British figure thought to have been a ruler of Alt Clut, the kingdom later known as Strathclyde . According to the Harleian genealogies, he was the son of his predecessor Riderch II, the grandson of Eugein II, and the great-grandson of King Dumnagual III of Alt Clut...

, evidently his successor as king.

External links

• Harleian genealogy 5