Mary Davys (1674[?]-1732), left Ireland for London in about 1699. We know nothing about her life between 1704, when she left London and went to York, and 1716, when she arrived back in London in modest triumph with a successful play. The Northern Heiress was performed at the theatre in Lincoln's Inn Fields on April 27 and 28. On May 1 it achieved the critical third performance—traditionally the author's benefit night—at which her profits were £71 19s. She probably believed that she was on the road to fame and fortune, or at least a living, because she wrote a second play, The Self-Rival. This was never performed however, nor was it even published separately. Its only appearance in print is in …
Bowden, Martha F.. "Plays". The Literary Encyclopedia. First published 21 October 2006; last revised 30 November -1.
[http://www.litencyc.com/php/sworks.php?rec=true&UID=20617, accessed 27 April 2015.]