vaunt-courier

vaunt-cour·i·er

 (vônt′ko͝or′ē-ər, -kûr′-, vŏnt′-)
n. Archaic
A person, such as a herald, sent in advance.

[Short for obsolete French avaunt-courier : Old French avaunt, in front; see vanguard + Old French courrier, messenger; see courier.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

vaunt-courier

n
archaic or poetic a person or thing that goes in advance; forerunner; herald
[C16: from French avant-courrier; see avaunt, courier]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014