Doris Y. (Roy) Creedon of Dedham, a homemaker, died Wednesday in Palo Alto, Calif. She was 89. Mrs. Creedon was born in New Bedford and lived in Dedham for 65 years. Like many women of her generation, she dedicated her time to raising her family and running the household. Wife of the late Joseph P., she is survived by two daughters, Catherine E. Carlson and Corinne M. Monahan of Wellesley; one brother, Louis Roy of Burlington, Vt.; and seven grandchildren. A funeral Mass will be celebrated at 10 a.m. tomorrow at St. Mary's Church, Dedham. Burial will be in Brookdale Cemetery, Dedham. Arrangements by the George F. Doherty and Sons Funeral Home, Dedham.