Hi Ronald, I saw your message and decided to have a look. The 1901 census and 1911 census for all Ireland are on line and free.Could this be your family? 1901 census for Bilboa,Co Limerick. Michael Riordan age 60 Widower. William Riordan age 34 son Margaret Riordan age 26 Dau in law. Margaret Riordan age 6 Grand Dau. Mary Anne Riordan age 4 Grand Dau. Bridget Riordanage 2 Grand Dau.
1911 Census for Bilboa William Riordan age 45. Margaret Riordan age 37. Margaret Riordan age 15 Dau Mary Anne Riordan age 13 " Bridget Riordanage 11" Patrick Riordanage 7 Son James Riordanage 4" Michael Riordanage 2"
Best regards, Seamus---also researching in Limerick.