Eva van Marle may have been the name of a Dutch Golden Age portrait painter who signed with the monogram E.M., EM.F.
[3][2] The oldest known work with an E.M. signature is a portrait of a goldsmith, who was the brother-in-law of Gerard ter Borch the Elder, dated 1645.
[1] The first time she is mentioned was in 1875, when the director of the Vrouwenhuis, whose grandfather was a Van Marle, attributed the six portraits there to her.
Towards the end of the 20th century, Eva van Marle's existence was enough in doubt that at exhibits the works were again assigned to "monogrammist EM".
Evert Meertman may be the same person as the Antwerp painter Ever(ard)t Moerman(s), who married the daughter of a local goldsmith in Zwolle in 1634, and gained citizenship in 1639.