Charlotte Louise Piazza Charlotte Louise Piazza died Aug. 29, 2006, at age 82. Charlotte Johnston was born Oct. 13, 1923, in Oregon City and graduated from Gladstone High School. She was office manager for 20 years at Dick Niles Lincoln-Mercury, retiring in 1981. In 1958, she married Rosario; he died in 1983. Survivors include her brother, Ward; niece, Moreen; and nephew, Donald. Remembrances to the Oregon Humane Society. Arrangements by Portland Memorial. Friday, September 01, 2006 Portland Oregonian