Corcoran - who is related?

Walter Corcoran born around 1811 in Castlegar/Carrowbrowne, Galway married Bridget Conelly, (born 1831 in Carrowbrowne, Galway) on the 27th February 1854. Walter died on 7th April 1871 and his widow and 7 seven children travelled to New Zealand and settled in Southland, from there establishing a successful life for all.

Does anyone havea connection to this family?