Tsarevich Peter Petrovich of Russia

Peter Petrovich with his family, his parents Peter I and Catherine I, his half brother Alexis Petrovich, his sisters Anna Petrovna and Elizabeth Petrovna

Peter Petrovich was born on 15 November 1715 in Saint Petersburg as the son of Tsar Peter I and Tsaritsa and future Empress Catherine I. Just over three weeks before his birth, Tsarevich Alexis Petrovich, Peter’s older half brother had a son, Peter Alexeyevich who would later become Peter II. Because Peter Alexeyevich had been born first, it was considered odd that Peter Petrovich was baptized as Peter when his nephew was still alive.

In 1715, Tsarevich Alexis tried to flee but was brought back in 1718 and investigated, he was tortured and forced to renounce his rights to the Russian throne and recognize Peter Petrovich as the new Tsarevich and heir apparent. By autumn, the new Tsarevich hadn't even spoken or walked yet.

Peter Petrovich died on 19 April 1719 in Saint Petersburg and was firstly buried in the Church of the Resurrection of Lazarus of the Alexander Nevsky Monastery, in 1723 he was reburied in the Annunciation Church leading to rumors that Tsar Peter had another son named Peter Petrovich born in 1719 but this was later proven false. Peter Petrovich’s death led to succession becoming uncertain due to Peter Alexeyevich becoming the only remaining agnatic Romanov after the tsar, in 1722 Peter I issued a law allowing him to choose his successor, but he never used it.[1]

In 1730, Peter Alexeyevich who was by then Peter II died, he was the last of the agnatic House of Romanov. Two years after Peter II died, a imposter claiming to be Peter Petrovich appeared and was quickly found and executed.[2]