Today, 215 years ago, a 65 year-old Lithuanian was named Vicar General of the Jesuits in Russia. It would be a significant step in the consolidation of the Society of Jesus in Russia. He was elected after the first ballot. Kareu was to enjoy a constructive and warm relationship with Paul I, the Tsar of Russia, his mother Catherine having died two years earlier. Paul continued to be a crucial benefactor and protector of the Society of Jesus. A sign of the trust that Paul held in the Jesuits was confirmed a year later when he entrusted a church and land to build a college in St Petersburg.
In 1801, Pope Pius VI was to issue a Papal brief Catholicae Fidei. This was a Partial Restoration of the Society of Jesus, Kareu and his successors were no longer to operate as vicar generals, but now could be seen as generals of the Society of Jesus albeit restricted to Russia. Strong opposition towards the existence of the Society from Charles IV of Spain led Pope Pius VII to qualify his acceptance of the Society by limiting it to the Russian Empire
After the publication of Catholicae Fidei, The Patriarch of Constantinople asked for the Jesuits to be of service in the area under his See. Also the English Jesuits running a college in Belgium requested to be united with the Jesuits in Russia. Kareu was to die soon after and was succeeded by Gabriel Gruber. The complete and universal restoration of the Society was to follow three years later.