The Annals record reads: "His omnibus peractis rex inde discessit ac Mersiburc, natale sancti Iohannis celebraturus [24 June], perrexit.
Illuc etiam Bratizlao dux Boemorum, Kazmir Bolaniorum, Zemuzil Bomeraniorum advenerunt atque regem donis decentibus honoraverunt.
[...] Inde discedens apostolorum Petri et Pauli festa [29 June] Mihsina celebravit ubi etiam conventionem secundo habens duces praefatos inter se pacificavit."
1046)[1] This entry describes Zemuzil's attendance of a meeting with Henry III, Holy Roman Emperor in Merseburg ("Mersiburc") on 24 June 1046, along with Bretislaus I, Duke of Bohemia ("Bratizlao dux Boemorum") and Casimir I of Poland ("Kazmir Bolaniorum").
[9] Before the connection between the document from 1040 and the one from 1046 was made the name was variously rendered as Ziemomysł (by Oswald Balcer), Siemosił (by Aleksander Brückner) and even Wszemysł (this particular variant has been abandoned as a hypothesis).
[6] Schmidt says it is not possible on the basis of the 1046 record to decide whether Zemuzil was an ancestor of later Pomeranian dukes, and cites similar conclusions of other German historians Martin Wehrmann and Adolf Hofmeister.
[9] Gerard Labuda doubted a connection between Zemuzil and Sememizl, whom he thought to be a son of Dytryk, one of the step brothers of Chrobry who had been banished by the Polish king to Germany.