When calling an illegitimate child after his
    mother will cause harm
Question

                As-Salaamu Alaikum Ya noble Shaikh,
   I have a question in regards to one of your answers. I have a first name
      followed by the first and last name of my father, unfortunately I was born out of wedlock.
      My mother wasn't muslim at this time 25 years ago, but has just become muslim this year(Al
      hamdu lillah). My question is would I still have to change my name to my mothers first
      name and family name even though when she did this sin she had never heard about Islam.
      Wouldn't this cause people to slander her and cause people to disrespect my mother and
      myself? Whatever is the right thing to do I submit to Allah Ta'ala. Please answer this
      question it is very important to me and my mother. May Allah bless you for teaching people
      the Deen you have helped me tremendously through your answers and kind words. JazakAllah
      Khair Wa Salaamu alaikum!
Praise be to Allah.In this case you do not have to call yourself after your mother so long as
    this will cause embarrassment and pain. It is sufficient for you to add any other names
    you may choose to your name, so long as you do not keep the name of the man who fathered
    you out of wedlock. So for example you could call yourself Ibraaheem ibn Abd-Allaah
    ibn Abd al-Rahmaan, or Yoosuf ibn Abd-Allaah ibn Hammaam, and so on. May
    Allaah bless us and you with strength and goodness.