Widely known under the nickname of Dafo, Woodford-Grimes' involvement in the Craft had largely been kept a secret until it was revealed in the late 1990s, and her role in the history of Wicca was subsequently investigated by historians.

The reason for Woodford-Grimes' adoption of the pseudonym Dafo is unknown, with the researcher Philip Heselton believing that it was not her craft name but a nickname given to her by Gardner, possibly being based upon his experiences in eastern Asia, where it had been used to refer to certain statues of the Buddha.

[4] On 16 June 1920, she married Samuel William Woodford Grimes, an Englishman who had been born in Bangalore, India in 1880, who at the time was working as a clerk in the War Pensions Office in Southampton.

Woodford-Grimes herself had performed the role of Theano in a play about Pythagoras that the Crotona Fellowship had put on, and which had been written by the group's leader, George Alexander Sullivan.

[8] Following this marriage, Rosanne and her new husband moved into Woodford-Grimes' bungalow, Theano, whilst she herself relocated once more to Avenue Cottage in Walkford, the village adjacent to Highcliffe, where Gardner and his wife Donna lived.

[12][13] The historian Ronald Hutton, in his 1999 book The Triumph of the Moon: A History of Modern Pagan Witchcraft, said that he had not researched into Dafo's past, because she would not have wanted such a thing, as most of her family were strict Christians.

[14] After her identity was revealed, she became well known in Wiccan circles, for instance the Neopagan bard Francis Cameron delivered a prose interpretation of her life and involvement with the Craft, written as if from her own point of view, entitled "Dafo's Tale", at The Charge of the Goddess conference 2010, held at Conway Hall in London.