According to the Centre for Contemporary History (ZZF), Segler was both one of the earliest victims of the Berlin Wall and the oldest victim, aged 80-years-old at the time of her death. Additionally, Segler was one of only eight women who was either killed at the Berlin wall, or died as a result of crossing it, among the total of at least 140 victims.
Olga Segler was born on July 31, 1881, in Prischt, now in Ukraine, into an ethnic German family. No other official documents providing information about her life exist, but by 1961 at the age of 80-years-old lived in Berlin, on the second floor (by European standards, third floor by North American standards) of Bernauer Straße 34. The building itself was located in the district of Mitte in East Berlin, part of East Germany, however it lied directly along the border with the district of Wedding in West Berlin, part of West Germany. The sidewalk and street adjacent to the building were situated in Wedding, where Segler's daughter was living.
On August 13, 1961, East Germany began construction of the Berlin Wall without warning, sealing the border between Mitte and Wedding, effectively separating Segler and her daughter. Residents of Bernauer Straße were placed under constant observation by East German authorities, who deemed it a "focal point of border breaches" with buildings along the street being barricaded and their hallways patrolled by watch guards.
On September 24, 1961, just over a month later, East German authorities began a forced evacuation of Bernauer Straße residents. People on the West Berlin side expected the residents to make attempts to flee and lined the street outside Segler's window, including Segler's daughter. The following day Segler jumped from her window into a life net which was prepared by the West Berlin firefighters. However, as a result of her jump, she suffered a back injury and was taken by ambulance to the nearby Lazarus Hospital. Segler later died of a heart attack caused by over-excitement from the jump. Her funeral took place at the municipal cemetery in Berlin-Reinickendorf. 
In 1962, a memorial was erected at outside Bernauer Straße 34 to commemorate Segler's death. In September 1982, the district office of Wedding established a memorial stone adjacent to Swinemünder Straße, to commemorate Olga Segler, along with other victims of the Berlin Wall, most of whom died on Bernauer Straße; these also included Ida Siekmann, Hans-Dieter Wesa, Rudolf Urban, Bernd Lünser, Ernst Mundt, Otfried Reck, Dietmar Schulz and, still unknown in 1982, the victims Dieter Brandes and Michael-Horst Schmidt. The district office of Wedding also placed a memorial tablet for Olga Segler in front of where her residence once stood, at Bernauer Straße 34.
- chronik-der-mauer.de: Biography of Olga Segler
- berliner-mauer-gedenkstaette.de: Biography of Olga Segler
- chronik-der-mauer.de: Memorial of Olga Segler in front of her residence on Bernauer_Straße
- chronik-der-mauer.de: Memorial stone to Olga Segler and other victims of the Berlin Wall on Bernauer_Straße
- berlin.de: Gesamtkonzept Berliner Mauer: Texte und Materialien. Archived December 25, 2016, at the Wayback Machine (PDF; 395 kB)(in German)
- berlin.de: Straßenkarte mit dem Ort des Ereignisses Archived August 15, 2016, at the Wayback Machine
- Werner Filmer, Heribert Schwan: Opfer der Mauer. Die geheimen Protokolle des Todes. Bertelsmann, München 1991, ISBN 3-570-02319-2, p. 85.
- Christine Brecht: Olga Segler, in: Die Todesopfer an der Berliner Mauer 1961–1989, Links, Berlin 2009, p. 46–47.
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