Gwen ferch Ellis (lit. trans. "Gwen the daughter of Ellis"; c.1542 – 1594) was born in Llandyrnog in the Vale of Clwyd. Ellis was first accused of Witchcraft in 1594, was found guilty and hanged before the year's end.^[1]

The record of Gwen ferch Ellis' trial is the earliest mention of witchcraft trial and execution in Wales.^[2][3]

Gwen ferch Ellis was born in the parish of Llandyrnog in c. 1542. Her parents' names are not recorded, other than her father's Christian name, Ellis. At a young age she was sent to live with her uncle Harry ap Roger and remained in his care until she married.^[4]

Gwen ferch Ellis was married three times in total. Her first husband, Lewis ap David ap Gwyn, died after two years of marriage. In 1588 she married a miller called Lewis ap David ap Gruffith Gethin (Lewis Gethin). The couple moved to his mill at Llanelian-yn-Rhos. After just 18 months of marriage, her second husband also died. In 1592, Gwen married John ap Morrice from the neighbouring parish of Betws yn Rhos and settled there. The fate of her third husband is unknown, although he was not mentioned during her trial.^[4]

Gwen enters the historical record in 1594 when she was examined by William Hughes (Bishop of St Asaph), on suspicion of charming. The records of the examination reveal that Gwen made her living by spinning and making linen cloth. She explained that she was also a healer. She made salves and plasters and other remedies for the treatment of animals. This she did in return for small gifts of food or goods. She also attended the sick, including children and, so she stated, had been using charms to help heal and provide protection.^[4]

Following her examination by the bishop, local magistrates were given the power to examine witnesses willing to testify against Gwen. Five men and two women came forward with accusations of witchcraft against her. She was accused of causing the madness of a child, and of murdering a sick man who died shortly after being treated by Gwen. She was also accused of having a vengeful nature, all through the use of witchcraft. Later in 1594, Gwen was tried on these charges and found guilty. She was executed by hanging in Denbigh town square before the end of the year.^[5]