Maria Jacobsen (November 6, 1882 – April 6, 1960) was a Danish missionary and a key witness to the Armenian Genocide.
 Jacobsen wrote the "Diaries of a Danish Missionary: Harpoot, 1907–1919", which according to Armenian Genocide scholar Ara Sarafian, is a "documentation of the utmost significance" for research of the Armenian Genocide.
 For her humanitarian efforts, Jacobsen is known as "Mayrik" (Armenian: mother) or "Mama" for having saved many Armenians during the Genocide.
The Armenian Genocide (Armenian: Հայոց ցեղասպանություն , "Hayots tseghaspanutyun"), also known as the Armenian Holocaust, was the Ottoman government's systematic extermination of 1.5 million Armenians, mostly Ottoman citizens within the Ottoman Empire and its successor state, the Republic of Turkey.
 The starting date is conventionally held to be 24 April 1915, the day that Ottoman authorities rounded up, arrested, and deported 235 to 270 Armenian intellectuals and community leaders from Constantinople to the region of Ankara, the majority of whom were eventually murdered.
 The genocide was carried out during and after World War I and implemented in two phases—the wholesale killing of the able-bodied male population through massacre and subjection of army conscripts to forced labour, followed by the deportation of women, children, the elderly, and the infirm on death marches leading to the Syrian Desert.
 Driven forward by military escorts, the deportees were deprived of food and water and subjected to periodic robbery, rape, and massacre.
 Other indigenous and Christian ethnic groups, such as the Assyrians and the Ottoman Greeks, were similarly targeted for extermination by the Ottoman government in the Assyrian genocide and the Greek genocide, and their treatment is considered by some historians to be part of the same genocidal policy.
 Most Armenian diaspora communities around the world came into being as a direct result of the genocide.
Oskar Schindler (28 April 1908 – 9 October 1974) was a German industrialist, spy, and member of the Nazi Party who is credited with saving the lives of 1,200 Jews during the Holocaust by employing them in his enamelware and ammunitions factories, which were located in occupied Poland and the Protectorate of Bohemia and Moravia.
 He is the subject of the 1982 novel "Schindler's Ark" and its 1993 film adaptation, "Schindler's List", which reflected his life as an opportunist initially motivated by profit, who came to show extraordinary initiative, tenacity, and dedication to save the lives of his Jewish employees.
Armenian Genocide Remembrance Day (Armenian: Մեծ Եղեռնի զոհերի հիշատակի օր "Mets Yegherrni zoheri hishataki or"; Russian: Геноцид армян День памяти , "Genotsid armyan Den' pamyati"; Turkish: "Ermeni Soykırımı Anma Günü" ) or Armenian Genocide Memorial Day is a national holiday in Armenia and the Nagorno-Karabakh Republic and is observed by the Armenian diaspora on 24 April.
 It is held annually to commemorate the victims of the Armenian Genocide of 1915.
 In Yerevan, the capital of Armenia, hundreds of thousands of people walk to the Tsitsernakaberd Genocide Memorial to lay flowers at the eternal flame.
Tacy Atkinson (July 3, 1870 – December 1, 1937) was an American Christian missionary who served in the Ottoman Empire during World War I and the Armenian Genocide.
 As a witness to the Armenian Genocide, her accounts of the Armenian Genocide provide an important insight to the event.
 She is also known for helping many Armenians escape the massacres.
Mehmet Celal Bey (Ottoman Turkish: محمد جلال بك‎ ‎; 1863 – 15 February 1926) was an Ottoman statesman and a key witness to the Armenian Genocide.
 During his career as a politician, Celal Bey served as governor of the Ottoman provinces associated with the cities Erzurum, Aleppo, Aydın, Edirne, Konya, and Adana.
 He also served as minister of the interior and minister of agriculture as well as mayor of Istanbul.
 Celal Bey is known for having saved many lives during the Armenian Genocide by defying deportation orders, which were preludes to starvation and massacres.
 As a result, he was removed from his post as governor in Aleppo and transferred to Konya, where he was again dismissed upon continuing to obstruct deportations.
 Today, he is often called the Turkish Oskar Schindler.
Armenian Genocide recognition is the formal acceptance that the systematic massacres and forced deportation of Armenians committed by the Ottoman Empire from 1915 to 1923 constituted genocide.
 The consensus of historians and academic institutions on Holocaust and genocide studies recognize the Armenian Genocide.
 However, despite the recognition of the genocidal character of the massacre of Armenians in legitimate scholarship as well as in civil society, at the governmental level nations have been reticent to officially acknowledge the killings as a genocide on account of political concern over their relations with the Republic of Turkey, the successor state of the Ottoman Imperial authorities which perpetrated the genocide.
 The governments of Turkey and its close ally Azerbaijan are the only ones that directly deny the historical factuality of the Armenian Genocide, and both are adamantly opposed to the recognition of the genocide by other nations, threatening economic and diplomatic consequences to recognizers.
Grace H. Knapp (21 November 1870 – 14 March 1953) was an American Christian missionary and teacher who served in the Ottoman Empire.
 During her time as a missionary, Knapp was a witness to the Armenian Genocide.
 During the Armenian Genocide, Knapp was stationed in Van and eventually described the events in the region in two published books describing her experiences.
 The first book, "The Mission at Van in Turkey in War Time", describes in detail the massacres of Armenians by Turkish soldiers during the Van Resistance.
 Her second book, "The Tragedy of Bitlis", relates the narratives of two nurses who witnessed massacres against the Armenian population in Bitlis.
 Her recounts of Bitlis is one of the few written accounts of massacres in that area.
Gourgen Mkrtich Yanikian (Armenian: Գուրգեն Մկրտիչ Յանիկյան , December 24, 1895 – February 29, 1984) was an Armenian American author, engineer, Armenian Genocide survivor, best known for the assassination of two Turkish consular officials, Los Angeles Consul General Mehmet Baydar and Consul Bahadır Demir, in California in 1973.
 Sentenced to life imprisonment, Yanikian was released on parole in January 1984.
 It is widely believed that Yanikian's act was the inspiration for the founding of the Armenian Secret Army for the Liberation of Armenia, the Armenian militant organization of the 1970s and 1980s which staged attacks on Turkish diplomats in retaliation for the Armenian Genocide.
Frederick G. Coan (23 May 1859 – 23 March 1943) was a Christian missionary who was a witness to the Armenian Genocide.
 Coan served as a missionary in Persia for over 50 years.
 He was an author of many books including "Yesterdays in Persia and Kurdistan" and has provided detailed eye-witness accounts of massacres of Armenians during the Armenian Genocide.
 Coan believed that the number of dead during the Armenian Genocide exceeded one million people.
 He referred to the Ottoman government's policy towards the Armenians as one of "extermination".

Question: Mehmet Celal Bey was an Ottoman statesman and a key witness to the Armenian Genocide, today, he is often called the Turkish who, he was a German industrialist, spy, and member of the Nazi Party, who is credited with saving the lives of 1,200 Jews during the Holocaust?
Answer: Oskar Schindler