Dutch name in Verschuere Reynvaan, who spells it Poolſche-Bok and mentions it as a synonym of Groote-Bok; NB¹: For more information, Verschuere Reynvaan refers to it as a lemma, but unfortunately I was unable to detect a copy of his volume 2, in which it would occur; NB²: ➺ Polscher Bock, Polska Bock, and Polnischer Sack.