Question Summary:
Is it permissible to marry ones grandfathers step brothers daughter?

Question Detail:

Can i marry my maternal grandfathers step brothers daughter.in that relation she is my aunty.pls reply

Answer :

In the Name of Allah, the Most Gracious, the Most Merciful.
As-salāmu ‘alaykum wa-rahmatullāhi wa-barakātuh.
It is permissible for you to marry your maternal grandfathers step brothers daughter. Allah Ta’ala mentions in the Quran after mentioning all those females with whom marriage is not permissible (Muharramaat): [i]
وأُحِلَّ لَكُمْ مَا وَرَاءَ ذَلِكُمْ
And lawful to you are all others (females) beyond these (Muharramaat) 
 
And Allah Ta’āla Knows Best
Aboobakr Siddeeq bin Mufti Amjad Mohammad
Student Darul Iftaa 
Azaadville, JHB, South Africa
Checked and Approved by,
Mufti Ebrahim Desai.