My great-great-great grandmother was Marie Emilie Therrien, wife of Arthur Thomas Duggan (1846-1900). The 1901 census of Canada lists her birth as August 15, 1855 in Quebec. The 1891 and 1911 census records also show her as being born in "abt 1856" and "Aug 1855" in Quebec.
However, I have not being able to find a Marie Emilie Therrien who was born in Quebec in August 1855. I have found some similar names in the Quebec Vital and Church records, but the dates don't match.
Also, I have been unable to find a marriage record for her and Arthur Duggan -- which would probably provide her parents' names. They were probably married around 1875/1876, since their first child was born in October 1876. The first child was baptized in Levis, while the rest were baptized in Quebec City.
*Marie Emilie Ada Duggan (1876-1877)
*Marie Emilie Ida Duggan (1880-1968), unmarried
*Marie Emilie Claire Duggan (1882-1917), wife of James Pellerin
*Joseph George Frederick Duggan (1884-1956), husband of Robena Gray
*Marie Louise Caroline Duggan (1885-1891)
*Marie Lillian Edith Duggan (1887-1891)
*Richard Henry Joseph Duggan (1889-1918), husband of Ethel Nora Goodman
*Charles Edward Duggan (1890-1970), husband of Mary Prudence Corrigan
Thanks for any help!