Summary This essay deals with two monumental tombs in the Cathedral of Uppsala (one in fragments) which are supposedly of Dutch origin and connected with Colijn de Nole and Cornelis Bos. At the restauration of Uppsala cathedral in 1886 quite a number of decorated stones were discovered at the bottom of a cellar. From a couple of escutcheons on one of the stones and an inscription in the way of an epitaph on another it could be established that these were in fact fragments from two monumental tombs dedicated to the memory of the two first queens of Gustavus Vasa (he married theree times), Katarina of Sachen Lauenburg († 1536) and Margareta Leijonhuvud († 1551). It appeared however that very little was known about these monuments. The old inventories of the cathedral disclosed that 45 pieces emanating from the monuments had been lying on the floor of the Vasa burial chapel towards the end of the 17th and through the 18th century. They had probably been removed to the cellar in 1830 when the floor of the cha...