His daughter Adriana Zwanck is a professional golfer who made her debut on the Ladies European Tour in 2011.
Federico Zwanck had the following podium finishes at major championships: 2nd in the 1955 Pan American Games 4×200 metre freestyle (with Pedro Galvão and the non-Olympians José Izaguirre and Jorge Vogt), 2nd in the 1955 Pan American Games 4×100 metre medley (with Pedro Galvão, Orlando Cossani, and the non-Olympian Héctor Domínguez Nimo).
Athlete Olympic Results Content
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