Helena:
That you may well perceive I have not wrong'd you,
One of the greatest in the Christian world
Shall be my surety; 'fore whose throne 'tis needful,
Ere I can perfect mine intents, to kneel:
Time was, I did him a desired office,
Dear almost as his life; which gratitude
Through flinty Tartar's bosom would peep forth,
And answer, thanks: I duly am inform'd
His grace is at Marseilles; to which place
We have convenient convoy. You must know
I am supposed dead: the army breaking,
My husband hies him home; where, heaven aiding,
And by the leave of my good lord the king,
We'll be before our welcome.

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Coriolanus, III.1.289 (1607)

MENENIUS:
Now the good gods forbid
That our renowned Rome, whose gratitude
Towards her deserved children is enroll'd
In Jove's own book, like an unnatural dam
Should now eat up her own!

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Cymbeline, III.5.120 (1609)

CLOTEN:
Wilt thou serve me? for since patiently and
constantly thou hast stuck to the bare fortune of
that beggar Posthumus, thou canst not, in the
course of gratitude, but be a diligent follower of
mine: wilt thou serve me?

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King Lear, II.4.179 (1605)

KING LEAR:
No, Regan, thou shalt never have my curse:
Thy tender-hefted nature shall not give
Thee o'er to harshness: her eyes are fierce;
but thine
Do comfort and not burn. 'Tis not in thee
To grudge my pleasures, to cut off my train,
To bandy hasty words, to scant my sizes,
And in conclusion to oppose the bolt
Against my coming in: thou better know'st
The offices of nature, bond of childhood,
Effects of courtesy, dues of gratitude;
Thy half o' the kingdom hast thou not forgot,
Wherein I thee endow'd.

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The Taming of the Shrew, II.1.76 (1593)

GREMIO:
I doubt it not, sir; but you will curse your
wooing. Neighbour, this is a gift very grateful, I am
sure of it. To express the like kindness, myself,
that have been more kindly beholding to you than
any, freely give unto you this young scholar,

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Timon of Athens, I.2.5 (1607)

VENTIDIUS:
Most honour'd Timon,
It hath pleased the gods to remember my father's age,
And call him to long peace.
He is gone happy, and has left me rich:
Then, as in grateful virtue I am bound
To your free heart, I do return those talents,
Doubled with thanks and service, from whose help
I derived liberty.

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All's Well That Ends Well, II.1.129 (1603)

KING:
I cannot give thee less, to be call'd grateful:
Thou thought'st to help me; and such thanks I give
As one near death to those that wish him live:
But what at full I know, thou know'st no part,
I knowing all my peril, thou no art.

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Coriolanus, I.9.54 (1607)

COMINIUS:
Too modest are you;
More cruel to your good report than grateful
To us that give you truly: by your patience,
If 'gainst yourself you be incensed, we'll put you,
Like one that means his proper harm, in manacles,

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William Shakespeare ((1564-1616))
Marvin Spevack, The Harvard Concordance to Shakespeare
Belknap Press of Harvard University Press, Cambridge, MA, 1973, p. 510
Shakespeare Concordance on the Web