I want to find my father.?

i am looking for my father. I know that he was born in Ireland but i don't know where. I know that we used to live in Preston, Lancashire and i know his name is John. We used to live near Avenham Park, Preston and he lived with us until i was between 6-10. I'm now 47 and want to find him. My mother is called Kathleen and i have 2 siblings, John ( named after him) and Roseleen or Roz as we call her. I know that he was last spotted near Fulwood and i'd like to know if anyone could help in finding him. John?