The painter and draughtsman Alberto van der Eckhout was possibly born in 1610 in Groningen, the Netherlands, to real estate broker Albert Ekhout and Marryen Reoleffs.

Frans Janz Post was born in Haarlem, Holland, in 1612. Some authors claim that Post was born in Leyden, however, according to Joaquim de Souza Leão,baptism records found at Haarlem Cathedral prove that he was a native of that city.