Marez Oyens (nee Wansink), Woltera 'Tera' Gerharda de (fem) 5.aug.1932-29.aug.1996 Netherlands, Velsen - Hilversum
pianist, 1953 graduated from Amsterdam Conservatory, studied piano with Jan Ode, composition with Hans Henkemans, conducting with Frits Kox and electronic music with Gottfried Michael Koenig at Utrecht University ; she married composer Gerrit Hendrik de Marez Oyens (Den Haag 7.sep.1922-) ; 8.mar.1975 she married M S Arnoni ; 23.may.1996 she married writer Marten Toonder (Rotterdam 2.may.1912-27.jul.2005 Laren) ; mother of composer Cas de Marez Oyens