Looking for Information on Mary Ann Keevil Nunan and Sarah Ann Smith Keevil

I am seeking information on Mary Ann Nunan who married Elihu Keevil in South Australia in 1846. She arrived in South Australia on board the "BIRMAN" in 1840 with her parents Maurice and Elizabeth Nunan/Noonan and 4 siblings. Elihu Keevil died in Nymagee NSW in 1886.
Any information about Mary Ann would be greatly appreciated, especially the date and place of death.

I am also seeking information on Sarah Ann Keevil who married Joseph Henry Smith in Young NSW in 1866. She is the daughter of Mary Ann and Elihu Keevil and was born in South Australia in 1847. Any information about Sarah Ann would be greatly appreciated, especially the date and place of death.