HI I Am Searching for My Ancestors from Ireland Abigail Clarke Who was Born

Hi I am searching for my ancestors from Ireland Abigail CLARKE who was born in County Galway Ireland and came to Australia on the ship Shackamoxon in 1862 with her sister Jane CLARKE both aged 18years, Abigail married Patrick PIERCE in Richmond in 1882 he was born in County Clare in Ireland and came to Australia on the ship Black Eagle in 1856 with his brothers Micheal and John, I would like to know more about their families in Ireland if possible
Regards Frau