L. L. Zamenhof the Yiddish form of the forename and a russified version of his surname; many later Russian language documents also include the patronymic "Markovich", as is the custom in the language. His family name is of German origin and was originally written "Samenhof"; the spelling Zamenhof reflects the romanization of the Yiddish spelling , as well as the Esperanto and Polish spellings. In his adolescence he used both the Yiddish "Leyzer" and the Russian "Lazar". While at university, Zamenhof began using the Russian name "Lyudovik" (also transcribed "Ludovic" or translated as "Ludwig") in place of "Lazar", possibly in honor of Francis
Ludwik Idzikowski Ludwik Idzikowski Ludwik Idzikowski (August 24, 1891 – July 13, 1929) was a Polish military aviator. He died during a transatlantic flight trial. Ludwik Idzikowski was born in Warsaw. He started mining studies in Liege, Belgium. At the outbreak of World War I, he was conscripted into the Russian Army. He completed aviation school in Sevastopol, and from 1916 served in air combat units as an officer pilot. After the October Revolution he managed to return to Warsaw and in November 1918 Idzikowski joined the newly-born Polish Army, in the rank of "podporucznik pilot" (flying 2nd Lieutenant). In 1919 he