aurorian

From Latin aurōr(a) + English -ian (cognate with Latin -ianus) or from aurora +‎ -ian. (Can this⁽⁺⁾ etymology be sourced?)

aurorian (not comparable)

1. Alternative form of aurorean.
   • 1818–1819, John Keats, “Hyperion, a Fragment”, in Lamia, Isabella, the Eve of St. Agnes, and Other Poems, London: […] [Thomas Davison] for Taylor and Hessey, […], published 1820, →OCLC, part I, page 155:

     And all its curtains of Aurorian clouds
     Flush'd angerly: while sometimes eagle's wings,