Peter was his father's youngest son and the child of his second wife, neither of which promised great things. Tsar Alexis also had three children by his first wife: Feodor, an invalid; Sophia; and Ivan, a semi-imbecile. When Alexis died in 1676 Feodor became Tsar, but his poor constitution brought an early death in 1682. The family of Peter's mother succeeded in having him chosen over Ivan to be Tsar, and the ten year-old boy was brought from his childhood home at the country estate of Kolomenskoe to the Kremlin. No sooner was he established, however, than the Ivan's family struck back. Gaining the support of the Kremlin Guard, they launched a coup d'etat, and Peter was forced to endure the horrible sight of his supporters and family members being thrown from the top of the grand Red Stair of the Faceted Palace onto the raised pikes of the Guard. The outcome of the coup was a joint Tsar-ship, with both Peter and Ivan placed under the regency of Ivan's elder and not exactly impartial sister Sophia. Peter had not enjoyed his stay in Moscow, a city he would dislike for the rest of his life.