Yakov Serafimov
Yakov Serafimov (1884, Yaroslavl Governorate, Russian Empire – 1949, Brussels, Belgium) – teacher of Math at Riga city Russian gymnasium (former Lomonosov).
Рижская городская русская гимназия (бывшая Ломоносовская) 1919-1935. - Рига, 1999