In 1860, Mary Ann O'Connor (b. Bristol) married John McDonnell at St Mary's (on the Quay?), Bristol at age 21. Her father's name was given as Hugh O'Connor, Farmer. In the 1861 census, she was living in Thornbury with her one-month-old son, Michael.
Any detail from 1851 on her family much appreciated. I cannot find a birth reference for her.