need help with family relationship (father and his brothers)

[Abetor]

As I understand father of newborn is Jerzy. Question - Are other two man are identified as his brothers ?
"Wincent Tomaszewicz ... stryi Novo narodzony z pierwszey linij" and "Maciej Tomaszewicz ... stryi Novo narodzony z drugiey linij"

Does words "z pierwszey linij" and "z drugiey linij" mean some kind of family ties hierarchy or something else, o it is just numbering (something like first witness and second witness) ? Are all three man real brothers ?

https://drive.google.com/open?id=1bLMVO ... Y39Ci7x_nF

[Kamiński_Janusz]

Jerzy and Wincenty are brothers,
Maciej is Jerzy's cousin (his brother brother)

[Abetor]

thank you