Jan Evangelista Konopas 1833–1909 Source: Wikimedia Commons People from the Same Era Marie Nicolas Edmond Garcin 1834–1915 military officer Neufchâteau Adolf Ledebur 1837–1906 engineer, metallurgist, university teacher Blankenburg Henry Crécy Yarrow 1840–1929 herpetologist, military physician, ornithologist, zoologist Philadelphia Paul Kupelwieser 1843–1919 entrepreneur Vienna David Buel Knickerbacker 1833–1894 cleric Schaghticoke Henry Stanislas Harwood 1838–1911 farmer, land surveyor, politician Vaudreuil-Dorion