There is a 20 yr gap in the census records [1880 - 1900] as the 1890 census was destroyed by fire in the 1920's
Both parents will be deceased by then.
1900 - Name: John Roddy Age: 28 Birth Date: Dec 1872 Birthplace: Ireland Home in 1900: Lowell Ward 6, Middlesex, Massachusetts [Middlesex] Race: White Gender: Male Immigration Year: 1890 Relation to Head of House: Head Marital Status: Married Spouse's Name: Mary Roddy Marriage Year: 1897 Years Married: 3 Father's Birthplace: Ireland Mother's Birthplace: Ireland Occupation:
John Roddy 28, IRE - does not know the month he was born Mary Roddy 35, IRE - does not know the month she was born; no children
Neither John nor Mary appear on any other census.
TRY - Find a grave – FREE SITE - volunteer site all states; frequently has headstone pic
DO NOT SEARCH FOR A MARRIED WOMAN USING HER MAIDEN NAME.