Emmeline M. (Emmeline Mary) Plunket

Published as the Hon. Emmeline M. Plunket, she is identified in library and public-domain records as Emmeline Mary Plunket, born in 1835. Her best-known book, Ancient Calendars and Constellations, was published in 1903.

That book examines the links between ancient astronomy, calendars, and religious traditions, especially in the civilizations of the ancient Near East and Egypt. Modern readers usually encounter her through digitized editions from Project Gutenberg, the Internet Archive, and library collections, which have helped keep her work available long after its original publication.

Very little biographical information appears to be readily confirmed in the sources I found, so it is safest to remember her mainly through her writing: a thoughtful, ambitious study of how earlier cultures understood the heavens and organized the year.