Rainis was the pseudonym of Janis Plieksans (1865-1929), a poet who is considered to be the greatest Latvian writer.
In latvian Jānis Rainis (Jānis Pliekāns) latvian poet and playwright, married to Aspazija (pseudonym of Elza Pliekāne born Rozenberga) another latvian poet and playwright.
Rainis works among others include "Uguns un nakts"(1905), Indulis og Ārija (1911).