In search of census/other inforation about my Costello line.

The Costellos had a homestead on Cole's Road in Cromwell as late as the 1940s, since my father remembers spending his summers there. It was the home of his grandmother Nellie Costello, (1879?-1961). Only info I have on her are the names of two sisters, Maria and Margaret.

Supposedly this home was in the Costello family for 100 years.