I'd say it is Paavo Nurmi.
Paavo Lipponen's birth name is Paavo Tapio Lipponen.
Paavo Liski's birth name is Paavo Antero Liski.
Paavo Rusko's birth name is Paavo Olavi Rusko.
Paavo Rintala's birth name is Paavo Olavi Rintala.
Paavo Tuominen's birth name is Paavo Edvard Tuominen.
Paavo Piironen's birth name is Paavo Paavali Piironen.
Paavo Haavikko's birth name is Paavo Juhani Haavikko.
Paavo Takkinen's birth name is Paavo Henrik Takkinen.
Paavo Berglund's birth name is Paavo Allan Engelbert Berglund.
Paavo Susitaival's birth name is Paavo Oskar Edvard Susitaival.
Paavo Nikula was born in 1942.