Boris, not Simeon!
"Boris was born on 30 January 1894 in Sofia to Ferdinand I, Prince of Bulgaria, and his wife Princess Marie Louise of Bourbon-Parma.
In February 1896, his father paved the way for the reconciliation of Bulgaria and Russia with the conversion of the infant Prince Boris from Roman Catholicism to Eastern Orthodox Christianity, a move that earned Ferdinand the frustration of his wife, the animosity of his Catholic Austrian relatives (particularly his uncle Franz Joseph I of Austria) and excommunication from the Catholic Church. In order to remedy this difficult situation, Ferdinand christened all his remaining children as Catholics. Nicholas II of Russia stood as godfather to Boris and met the young boy during Ferdinand's official visit to Saint Petersburg in July 1898. "https://en.wikipedia.org/wiki/Boris..._of_Bulgaria