Definition of "Easterling"

And that most greeued [grieved] them, the Easterlings being at libertie, brought to the realme such wares as they were woont, so serued their customers throughout the realme.

1587, Raphael Holinshed, “Henrie the Seuenth”, in Holinshed's Chronicles of England in Six Volumes. Vol. III. England‎, London: J. Johnson, page 508