Memoir (noun)

1. An account of the personal experiences of a particular individual.
2. A historical account or biography written from personal knowledge or special sources.

Origin:

Early 18th century: from french mémoire, from latin memoria "memory".

Examples:

1. She wrote a memoir about her life as a political activist.
2. He published a memoir of his experiences in the war.
3. The memoir provided a detailed account of the author's childhood.
4. The memoir described the author's rise to fame.
5. The memoir was a bestseller and critically acclaimed.