1) Author 2) Author of Historia Naturalis 3) Chronicler of ancient history 4) Elder of ancient history 5) Famous Roman writer 6) Friend of Trajan and Tacitus 7) Historia naturalis author 8) Natural History author 9) Naturalis Historia author 10) Old Roman naturalist 11) Pliny the younger 12) Roman author Found on https://www.crosswordclues.com/clue/pliny