The Saxon princess-abbess-saint Frideswide was not the founder of Oxford: there was certainly a settlement at the confluence of the Cherwell and the Thames well before her time. But she has a claim to be one of the founders of the idea of Oxford, the notion of the city as a nexus of learning, religion, and occasional miracles.
When she was brought thither and laid before the image of our Lady, her face was wonderfully disfigured, her tongue hanging out and her eyes being in a manner plucked out and laid upon her cheeks: and so, greatly disordered. Then there was a voice heard speaking within her belly, as it had been in a tun, her lips not greatly moving; she all that while continuing by the space of three hours in a trance. The which voice, when it told anything of the joys of heaven, it spake so sweetly and heavenly that every man was ravished with the hearing thereof. And contrary, when it told anything of hell, it spake so horribly and terribly that it put the hearers in a great fear. (From a letter written by Archbishop Thomas Cranmer to Archdeacon Nicholas Hawkins, 1533)