Who was first latvian president?

Jānis Cakste

Explanation:

On 14 January 1922, the first convocation of the saeima elected Janis Caktse as president of the republic of Latvia, who gave the solemn oath of president of Latvia on 18 November, 1922.

Jānis Kristaps Čakste (14 September 1859 - 14 March 1927) was a Latvian politician and lawyer who served as the first head of an independent Latvian state as the Chairman of the People's Council (1918-1920), the Speaker of the Constitutional Assembly (1920-1922), and as the first President of Latvia