Hello Kevin,
I am from Portumna and have been making some enquiries today with my neighbours who are Cannings, Rosemary and Geraldine. (Geraldine is very well up on the family history but not on email). From what Geraldine told me you are possibly third cousins - her father was Sean Canning and Joe was his first cousin.
Roger Joseph had a twin sister, Kathleen, who married a John O'Meara of Birr. Their nephew, Anthony or Tony Hogan, is living in Birr today and is a retired teacher.
I found the following in the 1911 census:
http://www.census.nationalarchives.ie/pages/1911/Galway/Drummin/Rosmore/473582/
Residents of a house 7 in Rosmore (Drummin, Galway)
SurnameForenameAgeSexRelation to headReligionBirthplaceOccupationLiteracyIrish LanguageMarital StatusSpecified IllnessesYears MarriedChildren BornChildren LivingCanningMichael46MaleHead of FamilyRoman CatholicCo ClareNational Teacher and FarmerRead and write-Married-1898CanningMatilda46FemaleWifeRoman CatholicCo Galway-Read and write-Married-1898CanningMary Ellen17FemaleDaughterRoman CatholicCo GalwayScholarRead and write-Single----CanningJohn12MaleSonRoman CatholicCo GalwayScholarRead and write-Single----CanningAnne Bridget13FemaleDaughterRoman CatholicCo GalwayScholarRead and write-Single----CanningRoger Joseph10MaleSonRoman CatholicCo GalwayScholarRead and write-Single----CanningKathleen10FemaleDaughterRoman CatholicCo GalwayScholarRead and write-Single----CanningMatilda8FemaleDaughterRoman CatholicCo GalwayScholarRead and write-Single----CanningAgnes Mary6FemaleDaughterRoman CatholicCo GalwayScholarRead and write-Single----CanningThomas Francis3MaleSonRoman Catholic
I can't quite follow the part about your mother and Nora, your grandmother.
Are you Canning yourself?
And your mother married Roger Joe and Nora's son? Nora raised her and then your mother ended up marrying Nora's son??
Hope the above helps
regards
Dolores
IrelandXO Portumna