Claim: Tamerlan Tsarnaev was an only child.
Evidence: Tamerlan Anzorovich Tsarnaev -LRB- Cyrillic : Тамерла́н Анзо́рович Царна́ев -LSB- , tæm@r'lɑːn_,tsɑr'naɪ.ɛf -RSB- October 21 , 1986 -- April 19 , 2013 -RRB- Тамерла́н Анзо́рович Царна́ев / Tamerlan Anzorovich Tsarnayev -LSB- tɐmʲɪrˈlan ɐnzoˈrɐvʲɪtɕ tsarˈnajɪf -RSB- Царнаев Анзор-кIант Тамерлан / Carnayev Anzor-khant Tamerlan.
was a terrorist who , with his brother Dzhokhar Tsarnaev , planted bombs at the Boston Marathon on April 15 , 2013.