In the letter written five years after their final separation, Byron again reproaches Mary Chaworth, but this time without a tinge of bitterness:

‘My own, we may have been very wrong, but I repent of nothing except that cursed marriage, and your refusing to continue to love me as you had loved me. I can neither forget nor quite forgive you for that precious piece of reformation. But I can never be other than I have been, and whenever I love anything, it is because it reminds me in some way or other of yourself.’

‘The Giaour’ was begun in May and finished in November, 1813. Those parts which relate to Mary Chaworth were added to that poem in July and August:

‘She was a form of Life and Light,
That, seen, became a part of sight;
And rose, where’er I turned mine eye,
The Morning-Star of Memory!’

Byron says that, like the bird that sings within the brake, like the swan that swims upon the waters, he can only have one mate. He despises those who sneer at constancy. He does not envy them their fickleness, and regards such heartless men as lower in the scale of creation than the solitary swan.

‘Such shame at least was never mine—
Leila! each thought was only thine!
My good, my guilt, my weal, my woe,
My hope on high—my all below.
Earth holds no other like to thee,
Or, if it doth, in vain for me:
... Thou wert, thou art,
The cherished madness of my heart!’
‘Yes, Love indeed is light from heaven;
A spark of that immortal fire
With angels shared, by Alla given,
To lift from earth our low desire.
I grant my love imperfect, all
That mortals by the name miscall;
Then deem it evil, what thou wilt;
But say, oh say, hers was not Guilt!
And she was lost—and yet I breathed,
But not the breath of human life:
A serpent round my heart was wreathed,
And stung my every thought to strife.’

Who can doubt that the friend ‘of earlier days,’ whose memory the Giaour wishes to bless before he dies, but whom he dares not bless lest Heaven should ‘mark the vain attempt’ of guilt praying for the guiltless, was Mary Chaworth. He bids the friar tell that friend

‘What thou didst behold:
The withered frame—the ruined mind,
The wreck that Passion leaves behind—
The shrivelled and discoloured leaf,
Seared by the Autumn blast of Grief.’

He wonders whether that friend is still his friend, as in those earlier days, when hearts were blended in that sweet land where bloom his native valley’s bowers. To that friend he sends a ring, which was the memorial of a youthful vow:

‘Tell him—unheeding as I was,
Through many a busy bitter scene
Of all our golden youth hath been,
In pain, my faltering tongue had tried
To bless his memory—ere I died;
I do not ask him not to blame,
Too gentle he to wound my name;
I do not ask him not to mourn,
Such cold request might sound like scorn.
But bear this ring, his own of old,
And tell him what thou dost behold!’