Maria Maeder married Arthur O'Keefe at St Paul's (Church of Ireland), Dublin on 13 August 1826. As Maria O'Keefe, she arrived in Tasmania, Australia, in November 1835, under the London Emigration Scheme. There she married James Rosier (as O'Keefe - her maiden name Maeder is on her children's birth certificates).
Her life in Tasmania is thoroughly detailed but her life in Ireland remains a mystery beyond her marriage to Arthur. She would have been born around 1812 in Ireland, if other evidence is to be believed.
Any and all help and/or guidance will be greatly appreciated.