blunderbussiern.

/ˌblʌndəbʌˈsɪə/Etymology: see -ier suffix.
rare.
society > armed hostility > warrior > armed man > [noun] > one armed with or using firearm > one bearing or using handgun > blunderbuss
a1734 R. North (1740) 302 Some of the blunderbussiers of the Rye.
This entry has not yet been fully updated (first published 1887; most recently modified version published online September 2018).