Keyfitz-Beatrice (Orkin) of Cambridge on October 5, 2009. Beloved wife of Nathan Keyfitz. Devoted mother of Barbara Lee Keyfitz and Robert Norman Keyfitz. Dear grandmother of Benjamin Nathaniel Keyfitz, Elizabeth Ann Golubitsky and Alexander Golubitsky. Loving sister of Mark M. Orkin. Services in the Bigelow Chapel on the grounds of the Mt. Auburn Cemetery, 580 Mt. Auburn Street, Cambridge, on Thursday, October 8 at 1:00 pm. Following the service family and friends are invited to her late residence. Remembrances may be made to Longy School of Music, 1 Follen Street, Cambridge, MA 02138.