Question: Which Russian linguist was a member of the Kazan School?
Context: Kazan School was an influential group of linguists in Kazan.  The linguistic circle included the Polish linguist Jan Baudouin de Courtenay and his student Nikolai Trubetzkoy. Elena Lvovna Berezovich (Russian: Елена Львовна Березович , born 1966) is a Russian linguist known for her work in onomastics, etymology, and ethnolinguistics.  She is currently a professor at the Department of Russian Language and General Linguistics of the Ural Federal University (Yekaterinburg).  Professor of the Russian Academy of Sciences (RAS), corresponding member of the RAS (elected in 2016). The JHC Bars (Russian: Молодежный хоккейный клуб «Барс» ; English: Junior hockey club «Bars» ) is a junior ice hockey team from Kazan, which contains players from the Ak Bars Kazan school.  They are members of the Junior Hockey League (MHL), the top tier of junior hockey in the country. Galina Gavrilovna Yershova, or Ershova (Russian: Гали́на Гаври́ловна Ершо́ва ; born 17 March 1955) is a prominent Russian academic historian, linguist, and epigrapher, who specialises in the study of the ancient civilisations, cultures, and languages of the New World.  As an Americanist scholar, her area of expertise is in the field of Mesoamerican studies, and in particular that of the pre-Columbian Maya civilisation, its historical literature, and its writing system.  Yershova is a former student and protégé of the famed Russian linguist and epigrapher Yuri Knorozov, renowned for his central contributions towards the decipherment of the Maya script. Leonid Nikolayevich Murzin (Russian: Леони́д Николáевич Мурзи́н , ] ) was a Soviet and Russian linguist, the Dean of philological faculty at Perm State University (1964 - 1967), the founder and the head of General and Slavonic linguistics department at Perm State University; the head of Perm derivatology school; he founded the Institute of dynamic linguistics.  Perm deivatology school encouraged the development of such linguistic school as "Computer based simulation of verbal communication" Paul J. Hopper is an American linguist of British birth.  In 1973, he proposed the glottalic theory regarding the reconstruction of the Proto-Indo-European consonant inventory, in parallel with the Georgian linguist Tamaz Gamkrelidze and the Russian linguist Vyacheslav Ivanov.  He later also became known for his theory of emergent grammar (Hopper 1987), for his contributions to the theory of grammaticalisation and other work dealing with the interface between grammar and usage.  He currently works as the Paul Mellon Distinguished Professor of Humanities at the Carnegie Mellon University in Pittsburgh, USA. Tamara Ivanovna Erofeyeva (Russian: Тамáра Ивáновна Ерофе́ева , ] ) (born June 29, 1937) is a Soviet and Russian linguist.  She is a Doctor of Philology, served as Dean of the philological faculty at Perm State University (1982 - 1988), is a leader of Sociolinguistic study of urban language, head of the school of Socio- and Psycholinguistics in the Department of General and Slavonic Linguistics at Perm State National Research University, and is an Honorary Figure of Russian Higher Education. Margarita Nikolayevna Kozhina (Russian: Маргари́та Никола́евна Ко́жина , ] ) (August 1, 1925 – August 11, 2012) was a Soviet and Russian linguist, Doctor of Philology, professor (1973), Honoured scientist of Russian Federation (1991), the founder of Perm school of functional stylistics, famous both within Russia and abroad, the founder of Russian language and stylistics department at Perm State University. Prince Nikolai Sergeyevich Trubetzkoy (also Troubetskoy; Russian: Никола́й Серге́евич Трубецко́й; Moscow, April 16, 1890 – Vienna, June 25, 1938) was a Russian linguist and historian whose teachings formed a nucleus of the Prague School of structural linguistics.  He is widely considered to be the founder of morphophonology.  He was also associated with the Russian Eurasianists. Svetlana Burlak, Russian: Светлана Анатольевна Бурлак ) (born June 12, 1969) is a Russian linguist, an Indo-European languages scholar, and an author of works on comparative linguistics and on the genesis of human language.  She is a senior researcher at the Institute of Oriental Studies of the Russian Academy of Sciences and a Tocharist.  Burlak has composed many linguistic problems, and has also written several manuals and popular science publications.  She is one of the permanent professors of the summer linguistic school and summer ecological school.  Professor of the Russian Academy of Sciences.
Answer: Nikolai Trubetzkoy