I am searching for where my great grandparents John Callahan and Rose (Murphy) Callahan are buried -and birth and death dates for both. I have Census records for 1880, 1900, and 1910 which show John and Rose Callahan and their children living in Cohoes NY. John and Rose were born between 1844 and 1847. John was born in NY State and Rose was born in Ireland. I checked with Calvary and St. Agnes Cemeteries of Cohoes and St. Mary's Cemetery of Waterford NY and did not find them. Can anyone help Where would I look next? Much Thanks, Jack Carr