of Christian II to Margaret's niece Isabella of Austria. The portrait that is held in Copenhagen's Statens Museum for Kunst is probably a copy of a lost original or a second copy ordered from Sittow. According to some sources in 1514 Sittow also painted a portrait of Mary Tudor (displayed today in the Vienna Kunsthistorisches Museum) as part of the betrothal negotiations. Previously this portrait has been assumed to be of Catherine of Aragon. Two other Sittow paintings of Mary Magdalen (Detroit) and the Virgin Mary (Berlin) may have also used the same model, or taken the portrait as their starting point – the use of members of royal households as models for sacred figures is found in court art in the Netherlands at this time. The "Berlin Virgin" formed the other half of a diptych with the Washington portrait of Diego de Guevara, a Spanish courtier with the Habsburgs, otherwise best known for giving the Arnolfini Portrait to Archduchess Margaret of Austria, governor of the Spanish Netherlands. This reidentification however does not address other two paintings nor does it go in depth over all the details in the painting itself. Author of this reidentification even goes as far as to suggest that Catherine of Aragon had no reason to wear the symbol of scallops as they are not her emblem, the pomegranate (not considering the fact that they are a symbol of St. James the Great, patron saint of Spain). Notably, pilgrimage to his shrine in Santiago de Compostela was commemorated by wearing scallops, and it is known Catherine made this pilgrimage. Credibility of this reidentification is hence questionable. From the Netherlands, Sittow returned to Spain and worked for Ferdinand II of Aragon, followed in 1516 by the Spanish King Carlos I, the future Charles V, Holy Roman Emperor. When Charles V abdicated from power he took Sittow's wooden sculpture of the Virgin and three paintings with him to his retirement in the monastery of Yuste. It is possible that Sittow travelled to Spain in an attempt to recover an unpaid salary from queen Isabel of Castile. In 1516 (possibly 1517 or 1518) Michael Sittow returned to Estonia. In 1518, he married Dorothie, a daughter of a merchant named Allunsze, in Reval. Their son Michel died shortly after birth. In 1523, Sittow became the Aldermann (guild-master) of the Guild of Kanut. Michael Sittow died of the plague in Reval