He earned a living tutoring sons of the nobility and frequently accompanied them to Protestant universities in Germany.
When Queen Bona Sforza who supported and protected the Protestants left for Poland, Kulvietis and Zablockis moved to Königsberg to avoid the persecution by Bishop Paweł Holszański.
With these letters, Zablockis returned to Kraków where he likely taught nobility's children and earned a master's degree.
[3] After obtaining a letter of recommendation from Duke Albert to Mikołaj "the Black" Radziwiłł,[5] they returned to Lithuania, but Kulvietis became mortally ill. Zablockis cared for him until his death on 6 June 1545 in Kulva.
[3] The group was initiated by Pier Paolo Vergerio who visited Vilnius twice and Mikołaj "the Black" Radziwiłł.
In May 1563, Zablockis and his students attended the wedding of Duchess Hedwig of Württemberg and Louis IV, Landgrave of Hesse-Marburg.
The 1570 edition removed the last stanza as it wished health to the duchess, i.e. the deceased wife of Albert, Duke of Prussia (he was married twice and his wives died in 1547 and 1568).
[4] A six-line Latin epitaph was published by Merkelis Giedraitis in 1561 to commemorate the death of Katarzyna, mother of Piotr Wiesiołowski [pl] who was Zablockis' student in Tübingen.