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G. O. Mebes -LRB- Gregory Ottonovich Mеbes , 1868 -LRB- Riga , Latvia -RRB- - 1930 -LRB- Ust-Sysolsk , Russia -RRB- -RRB- , was a leader of Russian Freemasonry , with more than 200 years of existence at that time , and the founder of ` The Initiation School of Western Esoterism ' .. Riga. Riga. Latvia. Latvia. Ust-Sysolsk. Ust-Sysolsk. Russia. Russia. Freemasonry. Freemasonry. In his external life , he occupied the position of professor of French and Mathematics in two of the best schools in Saint Petersburg .. Saint Petersburg. Saint Petersburg. He was appreciated and well known among the members of the society in the capital city .. However , very few knew of his School .. Only those who were invited by him were allowed into the School .