Otto Struve was born on 12 August 1897. He was Russian national and known as Astronomer.
Otto Nordenskjöld was born on 06 December 1869. He was Swedish national and known as Geologist.
Othmar Schoeck was born on 01 September 1886. He was Swiss national and known as Composer.
Otto Henne Am Rhyn was born on 26 August 1828. He was Swiss national and known as Writer.
Othmar Herman Ammann was born on 26 March 1879. He was Swiss national and known as Civil engineer.