Fritz Pfeffer /

Friedrich "Fritz" Pfeffer (30 April 1889 – 20 December 1944) was a German dentist and Jewish refugee who hid with Anne Frank during the Nazi Occupation of the Netherlands, and who perished in the Neuengamme concentration camp in Northern Germany. In Anne Frank's posthumously published diary all names, apart from those of the Frank family, were changed to preserve the privacy of individuals mentioned. Pfeffer was given the pseudonym Albert Dussel. Fritz was born in Gießen, Germany, one of the five children of Ignatz Pfeffer and Jeannette Hirsch-Pfeffer, who lived above their clothing and textiles shop at 6 Marktplatz in Giessen. After completing his education, Fritz trained as a dentist and jaw surgeon, obtained a license to practice in 1911 and opened a surgery the following year in Berlin. He served in the German Army during the First World War and afterwards, in 1921 married Vera Bythiner (31 March 1904 – 30 September 1942), who was born in Posen in Imperial Germany (now Poznań, Poland). The marriage produced a son, Werner Peter Pfeffer (3 April 1927 – 14 February 1995), then the couple divorced in 1932. Fritz was granted custody of the boy and raised him alone until November