On the night of his birth , he disappeared while in the care of six of Rhiannon 's ladies - in - waiting .
Pryderi was born in Arberth to Pwyll , Lord of Dyfed , and Rhiannon , daughter of Hyfaidd Hen .
On the night of Pryderi 's birth , Pryderi disappeared while in the care of six Rhiannon Rhiannon 's ladies - in - waiting .
Pryderi was born in Arberth to Pwyll , Lord of Dyfed , and Rhiannon , daughter of Hyfaidd Hen .