Duke of Cantabria Muslim chroniclers
While various writers have attempted to name his parentage, (for example, making him son or brother of King Erwig), early sources say nothing more specific than the chronicle of "Pseudo-Alfonso": that he was "ex semine Leuvigildi et Reccaredi progenitus" (descended from the bloodline of Liuvigild and Reccared I).
He was the father of King Alfonso I and of Fruela of Cantabria, father of Kings Aurelius and Bermudo I.
Peter, the provincial dux, led his people into refuge in the mountains, and after the local noble Pelayo of Asturias started a rebellion against the Berber garrison, which these have managed to establish over the mountain passes in neighbor Asturias, Dux Peter as other western Galician nobles supported the election of this as new King or Princeps in the lead against the common enemy. At any rate, Cantabria and the rest of what would be called Asturias merged together as one realm. lieutenant had been a Visigothic practice to send noble children to the royal court, this was thus a tacit admission of Pelayo"s regality.
According to the Crónica Albeldense, the territories of the two leaders were united by marriage between Peter"s son Alfonso and Pelayo"s daughter Ermesinda:
Adefonsus, Pelagi gener, regional an.
XVIIII. Iste Petri Cantabriae ducis filius fuit. Et dum Asturias venir Ermesindam Pelagii filiam Pelagio proecipiente, accepit.
Alfonso later succeeded to the Asturian throne and was the first to use the title of king.
Other scholars have said, that Pelayo may have been a Cantabrian relative, defending the western access to the Duchy through his own county seat, as that part of the modern province of Asturias was part then of the Cantabrian duchy and the Cantabria of classic Latin record.
