The second autobiographical novel in Leo Tolstoy’s trilogy begun with Childhood is Boyhood.
Tolstoy published Boyhood in 1854, following Childhood, which had appeared in 1852. The books draw heavily on the emotional development of a young nobleman and are commonly read as semi-autobiographical fiction rather than as a literal memoir.
The trilogy concludes with Youth, published in 1857. Its narrator, Nikolai Irtenev, continues the process of self-observation and moral questioning begun in the earlier books. The sequence is important because it shows Tolstoy developing the psychological realism later associated with his major novels.
A common mix-up is to call Youth the second volume. In publication order, Boyhood is second and Youth is third.