ANSWER:

You can go to the Masjid near you or the authorised Islamic center, they will look into your case and the Imam would act as your guardian. 

I am an orphan with no parents, and I am an only child, ie no brothers. Both my grandfathers have passed away. My father has no brothers.I am getting married soon. However, my future husband’s family is concerned I do not have a male guardian. Please advise.

Fiqh of Marriage | December 12, 2017 4:22 pm
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My father has not been a husband figure to my mother for many years (around 9), as he has remarried. My mother has not filed for divorce as she didn’t want to create a rift between the two families. Is there marriage still valid under Islamic law, is he still a Maharam to my mother?