Clark of Cambridge, March 25, 2011, Helen M. Clark. Devoted daughter of the late Ellen (Walsh) Clark. Cherished friend of Barbara McGrail and the entire McGrail family. Funeral from the John C. Burns & Sons Funeral Home, 305 Broadway, Cambridge, Tuesday, March 29, at 9:00 a.m., followed by a funeral Mass in St. Mary of The Annunciation Church, Cambridge, at 10:00 a.m. Relatives & friends invited. Visiting hours, Monday, March 29 from 4:00-7:00 p.m. Memorial Donations may be made in Helen's name, to the Sancta Maria Nursing Facility, 799 Concord Ave., Cambridge, MA 02138. Interment, Cambridge Cemetery.