René Louis Maurice Béguyer de Chancourtois

b. 1820, Bouxwiller, France - d. 1892, San Francisco, California

b. 1845, Lindebeuf, France - d. 1905

b. 1845, Perpignan, France - d. 1915, Gimel-les-Cascades, France

b. 1833, Paris, France – d. 1914, Sevres, France

b. 1846 - d. 1897

b. 1886, Sedan, France – d.1965, Paris, France