Middle English word grace comes from Latin ago, Proto-Indo-European *gʷr̥H-

Detailed word origin of grace

Dictionary entry	Language	Definition
ago	Latin (lat)	(of offerings) I slay, kill (as a sacrifice). (of plants) I put forth, sprout, extend. (of time) I pass, spend. I accomplish, manage, achieve. I chase, pursue. I discuss, plead, deliberate. I do, act, make, behave. I drive at, pursue (a course of action). I drive, conduct. I guide, govern, administer. I perform, transact. I push, move, impel. I rob, steal, plunder, carry off. I stir up, [...]
*gʷr̥H-	Proto-Indo-European (ine-pro)
gratias agere	Latin (lat)
grace	Old French (fro)	Grace; favor. Grace; gracefulness; elegance.
grace	Middle English (enm)

Words with the same origin as grace