Bibliographical sources mentioned in this text:
Becanus, Iohannes Goropius : Becceselanis 58.7 (1570)
Cæsar, Iulius 58.40 (1574)
Chytræus, David : Saxon history 58.7 (1595)
Divæus, Petrus of Louvain 58.7 (1570)
Guiccardini, Ludouicus 58.2 (1570), 58.7 (1570), 58.44 (1571)
Niger, Dominicus : Geography 58.8 (1574)
Petrus, Henricus 58.8 (1574)
Plinius : Bk.17, Ch.5 58.5 (1592), 58.40 (1579)
Stella, Iohannes Calvetus, a Spaniard : Journal of King Philip 58.7 (1570)
Thomas, Hubert of Liege 58.7 (1570).