Members of the ruling Romanov dynasty— including Tsar Nicholas II, his wife Alexandra, and his children Olga, Tatiana, Maria, Anastasia, and Alexei— were executed by a firing squad led by Yakov Yurovs
From left to right, Grand Duchesses Anastasia and Olga; Tsar Nicholas II, Tsarevich Alexei, Grand Duchesses Tatiana and Maria with Cossacks in 1916. Courtesy of Beinecke Library.