I have created profiles for Dana Zátopková and Emil Zátopek. Their profiles are Ingrová-3 and Zátopek-1.
At this stage, the only prospect of connecting them to the global tree is through Dana. She was the goddaughter and possibly relative of Czech army general Sergěj Ingr, who lived in exile in Paris and died in 1956. I have extracted some information from the Czech Wikipedia pages using Google Translate, but someone with Czech language skills can no doubt find more.