Petronella rhymes with:
donella, gonnella, agnella, arenella, brunella, campanella, cannella, citronella, cornela, danella, donella, farinella, fenella, finella, fontanella, gialanella, gonnella, janella, junella, manella, mannella, mennella, minella, nela, nella, ornella, panella, parnella, pennella, pernella, prunella, rinella, salmonella, spinella, vanella, zanella
Petronella sounds like:
paternal, patrimonial, petronilla