Mark Zamenhof Mark Zamenhof Mark Zamenhof (was born January 27, 1837 in Suwałki, died November 29, 1907 in Warsaw) is Esperanto form of Markus Fabianoviĉ Samenhof, "Christian" or goja name of Mordeĥaj Zamenhof, son of Fabian Zamenhof and father of L. L. Zamenhof (the creator of Esperanto); teacher of languages French and German. Knight of many orders. Descriptive analysis of the official documents allowed to ascertain that Mordka Zamenhof officially altered his name in Marek and postmortem the name of his father Fajwel to Fabian, what officially was lodged April 20, 1871, marginally of the earlier birth-certificate of Fejgla. Some unknown facts
Ludwik Hirszfeld Ludwik Hirszfeld Ludwik Hirszfeld (5 August 1884 in Warsaw – 7 March 1954 in Wrocław) was a Polish microbiologist and serologist. He is considered a co-discoverer of the inheritance of ABO blood types. He was a cousin of Aleksander Rajchman, a Polish mathematician, and of Ludwik Rajchman, a Polish bacteriologist. After attending the Gymnasium in Łódź, Hirszfeld, born into a Jewish family and later a convert to Catholicism, decided to study medicine in Germany. In 1902 he entered the University of Würzburg and transferred in 1904 to Berlin, where he attended lectures in medicine and philosophy. Hirszfeld completed his doctoral