Original: In January 1886 , Lenin 's father , a schoolmaster , died of a cerebral hemorrhage , and , in May 1887 , when Lenin was 17 years old , his eldest brother Alexander was arrested and hanged for participating in a terrorist bomb plot threatening the life of Tsar Alexander III .
Simplified: In that year , Lenin 's brother Alexander Ulyanov was hanged for his part in a bomb plot to kill Tsar Alexander III .