 Van Mierlo akatumidzwa kuti Bhishopi weHaarlem uye Abbot weEgmond Abbey muna March 1570 naPapa Pius V. Akagamuchirwa kuguta iroro pakutanga kwa1571, kwaakagadzwa bhishopi musi waFebruary 11 wegore iroro muChechi yeSt. Bavo neFranciscus van der Velde, Bhishopi weAntwerp. Zvisinei, gore rakatevera racho, musi waDecember 4, 1572, kereke huru yakaparadzwa neBeeldenstorm uye yakambova nzvimbo yaiitirwa misangano yevaCalvinist, iyo yakagara kusvikira pakapera kukombwa kweHaarlem. Van Mierlo aifanira kutsvenesazve chechi muna 1573. MuVeere, muna 1577, Van Mierlo akaisa chisimbiso chake paSatisfactie van Haarlem umo akapikira kupika kuvimbika kuna Willem the Silent panzvimbo paFiripi II weSpain, pamugariro wokuti vaKaturike vaizochengeta maruramiro mamwe chetewo navaPurotesitendi. 