ETYMOLOGY
from heart (n.) + quake (n.)
EXAMPLE
“…This disease taketh somtyme the one membre, as hand or fote, somtyme the halfe body, or the tonge, so that a man can not speake: somtyme cometh it of ouermuche ioye, heuinesse, meate or drincke, ouermuche laboure, reste, slouthfulnesse, feare, swounynge, hartequake, and of superfluitye of bloode, flegma, colera or melancoly. …”
From: A Most Excellent and Perfecte Homish Apothecarye or Homely Physik Booke, for all the grefes and diseases of the bodye
By Hieronymus Brunschwig
Translated by Ihon Hollybush, 1561
Lexicophilia 