- Initial M - mythological: Myrrha? (Daubmann)
- Initial M(Ilosciwy). In Eustachy Trepka, Ksiąski o tym, skąd wzięło początek słowo boże ..., Königsberg: Hans Daubmann (printer), 22 May 1557 (Warsaw, BN), fol. A2r ◼
- Initial M(Oim). In Anton Corvinus, Pirwsza część Postille To iest Kazania na Epistoły Swiętego Pawła z Antoniego Coruina wzięta ..., Eustachy Trepka (translator), Königsberg: Hans Daubmann (printer), 14 August 1557 - 31 December 1557 (Kórnik, BK PAN), fol. CXLIIr
- Initial M(Edicus). In Otmar Epplin, Selectiora Vetvstissimorvm Ac Probatissimorvm Patrvm Ivdicia..., Königsberg: Hans Daubmann (printer), 1560 (Augsburg, SSB), fol. fff5v
- Initial M(Agna). In Otmar Epplin, Selectiora Vetvstissimorvm Ac Probatissimorvm Patrvm Ivdicia..., Königsberg: Hans Daubmann (printer), 1560 (Augsburg, SSB), fol. xx3r
- Initial M(Agna). In Otmar Epplin, Selectiora Vetvstissimorvm Ac Probatissimorvm Patrvm Ivdicia..., Königsberg: Hans Daubmann (printer), 1560 (Augsburg, SSB), fol. f1r
- Initial M(Iracula). In Otmar Epplin, Selectiora Vetvstissimorvm Ac Probatissimorvm Patrvm Ivdicia..., Königsberg: Hans Daubmann (printer), 1560 (Augsburg, SSB), fol. Ddd4r
- Initial M(Emorabilis). In Petrus Sickius, Oratio De vestigiis Sapientiae Et Providentiae Dei, Qvae artibus impressa sunt ..., Königsberg: Hans Daubmann (printer), 1562, fol. D4v ◼
- Initial M(Acarius). In Jan Mączyński, Lexicon Latino Polonicvm, Ex Optimis Latinae Lingvae Scriptoribvs Concinnatvm ..., Königsberg: Hans Daubmann (printer), 1563 - 1564 (Warsaw, BN), fol. 202r
- Initial M(Acarius). In Jan Mączyński, Lexicon Latino Polonicvm, Ex Optimis Latinae Lingvae Scriptoribvs Concinnatvm ..., Königsberg: Hans Daubmann (printer), 1563 - 1564 (Kórnik, BK PAN), fol. 202r
- Initial M(Acarius). In Jan Mączyński, Lexicon Latino Polonicvm, Ex Optimis Latinae Lingvae Scriptoribvs Concinnatvm ..., Königsberg: Hans Daubmann (printer), 1563 - 1564 (Cracow, MNK, BCzart), fol. 202r