
Co-tsar with Peter I, mentally disabled.
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Ivan V was crowned as co-tsar of Russia alongside his half-brother Peter I, following the Moscow Uprising of 1682. Due to his physical and mental disabilities, Ivan was a figurehead ruler, with real power exercised by his sister Sophia Alekseyevna as regent.
Ivan V continued as nominal co-tsar while his sister Sophia Alekseyevna ruled as regent from 1682 to 1689. He played no active role in governance, with all decisions made by Sophia and her advisors, including Prince Vasily Golitsyn.
After Peter I overthrew Sophia's regency, Ivan V remained co-tsar, though he continued to have no real power. He lived quietly in the Kremlin, deferring to Peter, until his death in 1696, after which Peter became sole ruler.
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