Book "Mythology of Heretics, or Summary of Heretical Tales" The inscription by Melchior Giedraitis in the book "Mythology of Heretics, or Summary of Heretical Tales" indicates that the book was acquired in 1587 in Vilnius

The book “Mataeologia haereticorum, sive Summa haereticarum fabularum” by the Austrian lawyer and historian Georg Eder (1523-1587) belonged to the Samogitian bishop Merkelis Giedraitis (c. 1536-1609)

The title page of this book contains the following information: Melchior Ep[iscopu]s Samogitiae Dux Giedroic. Many of Giedraitis’s books were purchased in Europe. The bishop acquired Eder’s book in 1587 in Vilnius for twelve groschen. Other signs of provenance reveal the journey of the book in time