Meurig Ap Tewdrig
Meurig Ap was born about 0540.

 Onbrawst Verch Gwrgan Fawr
Onbrawst Verch Gwrgan was born about 0550.  Onbrawst Verch Gwrgan is no longer alive.

 Athrwys Ap Meurig
Athrwys Ap was born about 0570.

 Ffriog Ap Meurig

 Idnerth Ap Meurig