Tudur ap Gronwy
Tudur ap was born about 1320 in Penmyndd, Bangor, Wales.  He died in 1367.

 Margred verch Thomas
Margred verch was born about 1340 in Coed, Ceredigion, Wales.

 Maredudd ap Tudor ap Gronwy
Maredudd ap Tudor ap was born about 1365 in Penmyndd, Bangor, Wales.

 Rhys Mawddwy ap Tudur
Rhys Mawddwy ap was born about 1368.