Mr Snow, 59, learnt of his son's existence last month when he returned a telephone call from Paris and the man at the other end introduced himself as the son of a French woman with whom Mr Snow had had an affair in 1964.
Mr Snow's son, who has asked to be known only as Matthieu, is a merchant banker, 33, and both are said to be "delighted" by events.
"He rang out of the blue and one of the first questions I asked him was, 'Are you tall, dark and handsome' ... It is a lovely story," Mr Snow said last night. He is now able to call himself a grandfather as Matthieu has two children.
Mr Snow, has married twice since and has five other children.Reuse content