Seeking Information for Family Tree

I am seeking information regarding Sarah Ann Summers who I believe was born circa 1836-1839 in County Wicklow  with parents Michael Summers and Elizabeth Unknown. She came to Australia prior to 1858, as she was married on 7th November 1858 in Adelaide , South Australia, I have a copy of marriage certificate, she died in Melbourne in 1915 and have a copy of death certificate.

Any help would be appreciated.