Yvonne Morgan Yvonne Morgan is a graduate of Trinity College, Dublin. She has performed with Calipo Theatre Company and Upstate Theatre Company and on TV. PLAYWRITING CREDITS Love is the Drug... Xaviers CREDITS AS ACTOR PLAY TITLE AUTHOR Love is the Drug... Martin Maguire (1), Yvonne Morgan, Darren Thornton The Weavers Declan Gorman Translated and adapted from Gerhart Hauptmann's (1862-1946) The Weavers. Xaviers Barbara Carr, Martin Maguire (1), Yvonne Morgan, Darren Thornton