Barry was fresh out of school and looking to make some money from writing. He was noticed by Jane Dystel who offered to take him under her wing.
Barry became her client, and Miriam Goderich put together the promotional booklet below, stating that Barry was born in Kenya. It is inconceivable that the bio was not written by Barry, because that is how these things are always done. Where else could Miriam have possibly gotten his personal information from?
Even more implausible is that he was unaware of the booklet. It would have been a very big deal for him at that stage of his life.