Oh Happy DayCarmen Callil explores her roots in a book that is a miracle of research and whose writing is fuelled by righteous angera story of Empire, migration, and the poverty and injustices of nineteenth century England. A triumphant family memoir Hallie Rubenhold Powerfully told an impressive work The Times Oh Happy Day gives a voice to the voiceless Australian Book Review In this remarkable book, Carmen Callil discovers the story of her British ancestors,