In 1908, Gasquet claimed that use of the name atra mors for the 14th-century epidemic first appeared in a 1631 book on Danish history by J. I. Pontanus: "Commonly and
from its effects, they called it the black death" (Vulgo & ab effectu atram mortem vocatibant).
Francis Aidan Gasquet, The Black Death of 1348 and 1349, 2nd ed. (London, England: George Bell and Sons, 1908), p. 7. Johan Isaksson Pontanus, Rerum Danicarum Historia ... (Amsterdam (Netherlands): Johann Jansson, 1631), p. 476.
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