[2] Among the Tsarevich's teachers was Symeon of Polotsk, who taught Alexei Latin and Polish; the prince also studied Slavic grammar, arithmetic and philosophy.

During the absence of the tsar in the capital (including his stay in the active army), he was considered the interim ruler of the Russian state; during this period, official letters were issued on his behalf.

He was considered a candidate for the Polish throne; his marriage to the niece of John II Casimir Vasa was planned, negotiations about this were carried out through the boyar Matveyev.

“In the current 17 January 1670, at 7 o'clock in the afternoon, in the second quarter of an hour, on Monday, by the will of the Almighty Lord God, the Great Sovereign, Tsar and Grand Duke Alexei Mikhailovich, of all Great and Small and White Russia, the Autocrat, a prosperous industry, the son of His Sovereign, the Blessed Sovereign, Tsarevich and Grand Duke Alexei Alekseevich of all Great and Small and White Russia, from the life of his departure, and moved to the eternal bliss of the Heavenly Kingdom, from his birth in the 16th year”.

Later, already at the end of Razin's uprising, in August 1671, a second false Alexei appeared, who was actually the noble son of Ivan Kleopin, suffering from insanity.