Hans Evert born in Antwerp; in 1540 we find his name in the member list of the Guild of St. Luke. About this period of his life little is known. To 1545 he moved to London, where he remained until his death (approximately 1573).
He is credited with about 35 paintings, mostly portraits of the English landed nobility and wealthy aristocratic families. Almost all of them signed with the initials HE, why in the 18th and 19th centuries was considered the work of the Flemish artist Lucas de Heera.
In 1540 Mort joined the Guild of St. Luke in Antwerp. About 1549 he moved to England and about to 1573 he worked in London. His works, identified thanks to the monogram "NE", dated 1540-1567. In the early portraits of Marta noticeable influence of Jan van Scorel, in the works of the English period, Holbein, and later, Clouet. Among the first of his portraits the best are rubs That
Masa Wyndham (1550, Longford castle, collection Earl Radnor) and sir John Luttrell (1550, London, Gal. Courtauld Institute), which is much the influence of French mannerism. In the years of the reign of Mary Tudor Ewart created a lot of portrait miniatures and larger portraits of the Queen (1554, London, Society of antiquaries). Probably in this period he was the official artist of the court, but with the coming to power of Elizabeth 1 fell into disgrace. Since then, his patrons became the aristocracy and the Catholic nobility, and later he was entrusted with the decoration of court festivals (1570 - 1573). Masterpiece of Marta are portraits of the Duchess of Suffolk and Adrian from Stoke's (1559, Volas, meeting Wynne-Finch) and Mrs. Joan Oakman (1566, first - Cornbury Park, meeting Oliver Watney). The influence of Marta noted the work of Nicholas Hilliard.