Olga Tsuberbiller

[4] She was the granddaughter of the industrialist Pyotr Ionovich Gubonin [ru] and spent at least part of her youth on the family's estate at Gurzuf.

[2][3] The resort, which now makes up Gurzuf was founded by Gubonina's grandfather and uncle, Sergei Gubonin (Russian: Сергей Петрович Губонин).

The two designed the 93 hotels and summer cottages with the assistance of the architect Platon Konstantinovich Terebenev (Russian: Платон Константинович Теребенев) and it quickly became a favorite place of writers, as it had been in earlier years for Alexander Pushkin.

[6] Tsuberbiller was dedicated to her students' education, establishing both a mathematics library and reading room to facilitate further study.

[11] In 1927, Tsuberbiller published the first edition of Задачи и упражнения по аналитической геометрии (Problems and Exercises in Analytic Geometry), which became a standard text in Soviet high schools.

The book has been reprinted in Russian more than thirty-five times and has been translated into Chinese, Czech, German, and Polish.

[4][19] Soon after Parnok' death, Tsuberbiller began a relationship with Concordia Antarova,[19] a noted opera singer who later became interested in Theosophy and published books.

[19] In 2014, Tsuberbiller's portrait was painted by Boston-based artist Ria Brodell for their series Butch Heroes, which celebrates "people who were assigned female at birth, but who presented as masculine, and had documented relationships with women."

Antarova and Tsuberbiller's grave