She was born c.465 AD and she was the granddaughter of Meuric ap Tewdric of Trebeferad.
She lived a humble life as a virgin and hermit in a mud hut on the River Thaw, and was associated with the monastic school of Llantwit Major where she was buried.
There is a tradition that the village of St Athan in the Vale of Glamorgan is named after Tathana, however it is thought that the male Saint Tathan is more probable.
[2] The parish church is dedicated to Tathan.
This article about a saint is a stub.