The subjects have not been identified, but it is thought that the dress of the men may be Venetian in style. The child's costume, which is recognisably that of a girl, can be dated to around 1540. The painting is probably painted by a Netherlandish painter working in Venice or the Veneto. It was once attributed to Dirck Barendsz. (1532 - 1594) who, according to the historian van Mander, was in Venice in about 1555.
The National Gallery, Trafalgar Square, London WC2N 5DN