Reviewing the Prado’s joint exhibition of Sofonisba Anguissola and Lavinia Fontana in the Art Newspaper three years ago, Brian Allen pronounced it well worth seeing but predicted that each of these pioneering 16th-century women artists ‘would wither in the spotlight of her own retrospective’. Was he right? In its new monographic exhibition devoted to Fontana, the National Gallery of Ireland puts his waspish prediction to the test.