How old are you? The Russian revolution was in 1917. How could you personally know Orthodox seminarians who converted to Catholicism attending Jesuit schools before the revolution? And where were all these Jesuit schools in Russia before the Russian Revolution?
What is so horrible about St. Francis and the Jesuits?
The Jesuits not only played a significant role in teaching and influencing Orthodox Christians in the Middle East, but they also instructed Orthodox Christian seminarians in Russia in the pre-revolutionary times. I knew several Russians who were converted to Catholicism in their youth while attending Jesuits schools, only to rediscover Holy Orthodoxy later on. Interestingly, they became Jesuits, but left the Jesuits when they were told to return to Russia and convert the Orthodox Christians to Catholicism.
These Orthodox Christians have died now. I only knew them as very elderly in their late 80s or early 90s back in the late 1990s. The Jesuits had high schools all over the world, particularly in France, to which the Russian upper class and royalty would send their children. When these children were very young, they were trapped abroad in these Jesuit boarding schools, and many lost their parents to martyrdom in the Soviet Union. The Jesuits befriended these orphans and encouraged them to convert to Roman Catholicism.
I met a convert from Judaism who had been "adopted" by the Pope of Rome during this time. This allowed him to stay in Jesuit schools, become a religious, and pursue an education. Years later he became an Orthodox Christian.
Because of their Jesuit education, these men have remained very ecumenist throughout their lives.