Shrewsbury - Mrs. Bettyann (O'Toole) Chamberlin, of Shrewsbury, formerly of Waltham, died Tuesday, June 26, 2007 in her home. She was 86. Born in Waltham, a daughter of the late John and Mathilda (Aucoin) O'Toole, Bettyann lived in Waltham for many years before moving to Shrewsbury over twenty years ago. Bettyann worked as a controller for a chemical importing company until her retirement in 1986. She was very active at the Shrewsbury Senior Center and had been a member of Mount Olivet Lutheran Church in Shrewsbury. From 1998 to 2003 she served as a member of the Shrewsbury Council on Aging. Bettyann was the sister of the late John, Richard, and Mary O'Toole. Bettyann leaves her children, Roy B. Chamberlin of Redmond, Oregon and Elizabeth J. Brown of Parker, Arizona; one brother, Edmond O'Toole of Fort Myers, Florida; three grandchildren and many nieces and nephews. Relatives and friends are invited to attend Funeral Services on Saturday at 10:30 a.m. in The Joyce Funeral Home, 245 Main Street (Rte.20), Waltham. Burial will be in Calvary Cemetery, Waltham. Visitation will be held prior to the service from 9 to 10:30 a.m.