Martha Williams of Buffalo announces the engagement of her daughter, Leverda, to Marty C. Jones, son of Mr. and Mrs. John E. Jones of Lackawanna. Miss Williams is a graduate of Bennett High School, Erie Community College and Daemen College. Her fiance, an alumnus of Lackawanna High School, attended Kent State University and served in the Army. He is a graduate of Airco Technical Institute and Niagara County Community College. An Aug. 26 wedding is being planned.