Looking for my father's family

Hello, my name is Elizabeth Higgins and I live in Philadelphia.  I just turned 24, and I am doing alot of reflecting and giving my life some serious thought.  I have travelled and lived in foreign countries since I was 17.  So far my life has been full and satisfying.  But realizing that I am getting older has led me to search deeper, I have sorted out alot of things in the past week since my birthday, lost connections, broken relationships, basically tying off loose ends.  In doing so I have finally identified one massive whole in my heart that has been the cause of much pain all my life, I was not able to admit this to myself until now, and the tears won't stop.  As gratifying as my life has been I am now aware of the fact that half of who I am is a mystery to me, and half of my family are complete strangers, possibly unaware of my very existence.  I am now a little older and wiser and have a strong desire to learn more about who I am and where I have come from. My mother and father were never married and had two children, of which I am the eldest, Sarah is 22. My mother's name is Mary and she is Irish, so I am Irish, but also Iranian-I want to be what I am and not just what I was raised to be. I know that my father lives in Orlando, he is married with two young boys.  He is also very ill.  I have attempted to contact him several times over the years.  His wife is not cooperative and usually hangs up the phone, he is hard to get in touch with and takes no initiative to contact me.  I have accomplished one or two conversations with him in the past ten years despite countless attempts.   His name is Mohammad Nojadesadat Sabeti and he is currently 59 years old.  If anyone reading this is willing and able to help me connect with his family please e-mail. Thank You and God Bless