I am searching for information about my grandfather, Cornelius Cronin. The only information we have is that he is originally from Rathmore, County Cork. Approx. birthdate 1900. Don't have his parents names. Cornelius immigrated to England and married Charlotte Dorrington in 1925. My father, Alan James Cronin was born in 1926. My father immigrated to Ontario, Canada in 1957. Cornelius Cronin died approx. 1957-1958. My father thinks that Cornelius had a lot of siblings and that several of them immigrated to Boston area of United States. Any information would be appreciated.