Ger Tzedek

Question

Dear Rabbi Abadi, Our shul has a wonderful gentile, who is very close indeed in completing his requirements prior to conversion. Tivo asked us (friends of his in shul) if we would be good enough to select a hebrew name for him. My friends are having a disagreement on the name. Most say we need to call him Avraham ben Avraham Aveinu, but others feel it is not required. What is your ruling, Rabbi? A Fishman