John Kelvin Koelsch, a former Briarcliff Manor resident who died heroically during the Korean War, will be honored with a plaque and ceremony on Veterans' Day, Friday, Nov. 11. A bronze plaque honoring John Kelvin Koelsch will be formally unveiled on Veterans Day in Walter W. Law Memorial Park in Briarcliff Manor. BRIARCLIFF MANOR, N.Y. -- It's been 65 years since Briarcliff Manor's John Kelvin Koelsch died, but the village is finally giving the Korean War hero his due.