John A. Connolly

I am looking for any information, including birth and baptism, regarding my gggrandfather John A. Connolly and any additional information regarding his family in Ireland.  I believe John was born in County Galway around 1826-28.  He emigrated to Boston in the 1840s.  He married Mary C. Murphy on March 25, 1856 in Boston. On their marriage certificate, his father's name is listed as Timothy.  He died on August 4, 1884 in Boston.  On his death certificate, his father is listed as John and his mother as Julia.  John and Mary Connolly had eight children, all born in Boston: John J. Connolly (born 1857); David Francis Connolly (born 1859); Margaret Louisa Connolly (born 1863); William Henry Connolly (born 1865); James Francis Connolly (born 1868); George Augustus Connolly (born 1871 - my ggrandfather); Joseph Bernard Connolly (born 1873) and Mary Agnes Connolly (born 1876).