Mezue ahịrịokwu na-esonụ: Greetje Kraan (mgbe ụfọdụ a na-asụhie ya ede dị ka Geertje) bụ onye bụbu onye na-egwu mmiri na Netherlands. Dịka otu n'ime ndị otu mba, o meriri asọmpi
1958 European Aquatics Championships na 4 × 100 m freestyle relay ma mebie ndekọ ụwa abụọ na 4 × 100 m medley relay (1956 na 1957). N'afọ 1957, o setịpụkwara ihe ndekọ Europe na 100 m freestyle (25 m ọdọ mmiri).