He is said to have been born at his residence in Glyndyfrdwy near Corwen in North East Wales, at what was probably his principal residence at Sycharth near Llansilin on the Wales / Shropshire border or least likely at Trefgarnowen in Pembrokeshire where his mother was from. Another intriguing possibility is that he was born at Rhuddallt (now Wynnstay Park) near Ruabon, Wrexham. See The Last Mab Darogan: The Life and Times of Owain Glyn Dwr' for full details of where and when he was born.

North-East Wales

Owain Ab Grufydd, more commonly known as Owain Glyndwr was the second born son of gryfydd fychan 11, grufydd was the hereditry heir to powys fadog an area then consisting of an area from corwen up to mold and wrexham, the family estate was at rhyddallt which is basically the now wynstay estate in ruabon near wrexham, this was the family estate before owain was born, with glyndyfrdwy and sycharth being later developments or perhaps improvements by owain himself upon his marriage, therefore it is most likely that owain glyndwr was born at rhyddallt, ruabon near wrexham and lived there till the death of his father when owain was about 16

Owain Glyndwr was a noble man and he became prince of Wales in 1400. He took charge of Wales and made it better. He fought in loads of battles with his army and took over the town's and castles of Wales.