Gisela Staudigl 1864–1929 Source: Wikimedia Commons About Gisela Staudigl Austrian opera singer (1864-1929) People from the Same Era Percy Quin 1872–1932 lawyer, politician Søren Bloch Laache 1854–1941 internist, physician, university teacher Luigi Cozza 1867–1955 politician Acquapendente Donald Fraser 1870–1933 missionary Albert Howard 1873–1947 agronomist, botanist, ecologist, environmentalist, scientist Bishop's Castle Kasimir Petrovich Kalitsky 1873–1941 geologist Saint Petersburg