Mabel Garrison Siemonn (April 24, 1886 – August 20, 1963), was an American coloratura soprano who sang at the Metropolitan Opera from 1914 to 1921. == Biography == Garrison was born in Baltimore, Maryland on April 24, 1886. She lived in the Guilford neighborhood at 3 Overhill Road. She graduated from Western Maryland College (now McDaniel College) in 1903. She went on to study singing at the Peabody Conservatory. In 1908 she married the professor of harmony, George Siemonn and... [more on Wikipedia]