Konstantin Vvedensky b. 1851 Source: Wikimedia Commons People from the Same Era Alexander Douglas-Douglas 1843–1914 politician J. de Villemont 1850–1931 Catholic priest Champdeniers Henry Saunders 1855–1919 civil engineer, land owner, mine entrepreneur, politician London Samuel Applegate 1854–1926 collector, fur trader, meteorological observer, miner, scientific collector Barnegat Township Karl Pearson 1857–1936 biographer, eugenicist, historian, historian of mathematics, mathematician, philosopher, psychologist, statistician London Selwin Calverley 1855–1900 barrister, sailor Leeds