Pieter Jansz Pourbus ( 1510 - 1584 ) was a Flemish painter. Pieter Jansz Pourbus s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 28680 USD for Portrait of a young man, said to be a member of the Overstolz de Efferen family of Cologne, bust-length, wearing black costume w in 2004 to 132000 USD for Portrait of a Lady, three-quarte