Short answers, pulled from the story.
Mikhail Romanov accepted the crown of Russia on the 21st of February 1613. He was sixteen years old and sitting at the Ipatiev Monastery in Kostroma when he received the offer from the Zemsky Sobor.
The House of Romanov originated as boyars under the Rurik dynasty with Andrei Kobyla serving as the earliest common ancestor around the year 1347. The family gained power when Anastasia Zakharyina married Ivan IV on the 3rd of February 1547, making her the first tsaritsa of Russia.
Peter I took the title of emperor and proclaimed the Russian Empire in 1721 to transform the country into a great power through wars and reforms. He led a cultural revolution that replaced traditionalist medieval systems with modern scientific and Europe-oriented structures during his rule from 1682 until his death in 1725.
Bolsheviks moved the Romanovs to Yekaterinburg in the Urals where they were placed in the Ipatiev House. On the night between the 16th and the 18th of July 1918 the entire Russian Imperial Romanov family along with several retainers was executed by Bolshevik revolutionaries most likely on orders of Vladimir Lenin.
Dr Alexander Avdonin discovered the mass grave containing remains of Nicholas II Alexandra Feodorovna three five Romanov children near Old Koptyaki road Yekaterinburg Russia in the mid-1970s. The grave contained forty-four heavily degraded bone tooth fragments found using metal detectors rods probes striped material appeared blue-white cloth Alexei commonly wore undershirt same pattern.