- Immigrated to the United States, May 1918
- Married the Spanish singer Carolina Codina,
known as Lina Llubera, in 1923 (Though Prokofiev
did have an affair with Mira Mendelson, they did not divorce)
- Birth of first son, Sviatoslav Prokofiev, 27 feb 1924
- Birth of second son, Oleg Prokofiev, 14 dec 1928 (may 1, 1918 – dec 14, 1928)