Albert Ludwig Sigesmund Neisser
Neisser was born in the Silesian town of Schweidnitz (now Świdnica, in Poland), the son of a well-known Jewish physician, Dr. Moritz Neisser. After he completed the elementary school in Münsterberg, Neisser enrolled in the St. Maria Magdalena School in Breslau (now Wrocław, in Poland). In this school, he was a contemporary of another great name in the history of medicine, Paul Ehrlich. He obtained the Abitur in 1872.
Alexander Neibaur
Neibaur was born in 1808 to Nathan and Rebecca Peretz Neibaur in Ehrenbreitstein, near Koblenz. Because that area had been incorporated into France by Napoleon, Neibaur's father served as a surgeon in the Army of France.