AMOK, Who's the writer?

AMOK(= AMUCK)

HAJI, thou sayest I have killed my brother ;
Who told this tale to thee ?
And that we were two children of one mother ;
Only one child I see.

The world I live in now is something different
From that I knew of old,
And only one man walketh in these caverns
Of crimson clouds unrolled.

Each must fulfil the laws which power prescribeth,
As in my former sphere
With quiet irony and hidden passion
I lived my life ; but here

Not such a life is proper, for thought's current
Setteth another way ;
The spirits bid me have no fear to murder,
And them I must obey.

Siti, whose beauty far surpassed the radiance
Of heaven's moon and sun,
But lately stole away and left me mourning,
And the old life was done.

Customs I knew before are alien to me ;
My former bonds are rent ;
Seemeth that change of world has changed me also,
And now my strength is spent.

Allah wataala ! out beyond the mangroves
Rises a white-winged mist
With chilly dew benumbing all my senses,
As though 'twere Death that kissed.

Hark, in the pandan-clump the mory warbles,
Sinking in cadence sad,
And I must leave our lovely world for ever ;
In death I am not mad.

Taken from the book POEMS OF THE MALAY PENINSULA by R.GREENTREE, 1874 & published 1901 (so old! like over 100yrs now, maybe the poems is a lot older). Still have not finish reading it..:p

downloaded from here

anyway, this poem is translated to english by the book author, but do anybody here know who the poem writer and do you got the original Bahasa Melayu version?