Diedel, Ruth Briggs. On Saturday, September 15, 1984, Ruth Briggs Diedel of Washington, D.C., wife of the late Charles Diedel. She is survived by her counsins, June M. Cogswell of Monterey, Calif., John D. Cogswell of Fairfax, Va., Guy U. Cogswell of Silver Spring, Md., and Glenna F. Schommer of Myrtle Beach, N.C. Graveside service will be held at Congressional Cemetery on Wednesday, September 19, at 10:30 a.m.