Nepal 'Buddha Boy' returns to jungle, page 1

Buddha is not one individual, it simply means someone who has acheived spiritual enlightenment. There's been many Buddha's.

List of the twenty-eight Buddhas
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From Wiki

In Buddhism, the term 'buddha' usually refers to one who has become enlightened (i.e., awakened to the truth, or Dharma). The level to which this manifestation requires abstraction from ordinary life (ascetic practices) varies from none at all to an absolute requirement, dependent on doctrine.

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Buddhists believe in recarnation, but what most people don't realise is that when a person is recarnated, it isn't exactly the same person.

Human beings are constantly giving off physical and spiritual forces in all directions. In physics we learn that no energy is ever lost; only that it changes form. This is the common law of conservation of energy. Similarly, spiritual and mental action is never lost. It is transformed.

Reincarnation (Transmigration)

Based on his no-soul (anatta) doctrine, the Buddha described reincarnation, or the taking on of a new body in the next life, in a different way than the traditional Indian understanding. He compared it to lighting successive candles using the flame of the preceding candle. Although each flame is causally connected to the one that came before it, is it not the same flame. Thus, in Buddhism, reincarnation is usually referred to as "transmigration."

Nirvana

Nirvana is the state of final liberation from the cycle of death and rebirth. It is also therefore the end of suffering. The literal meaning of the word is "to extinguish," in the way that a fire goes out when it runs out of fuel. In the Surangama, the Buddha describes Nirvana as the place in which

it is recognized that there is nothing but what is seen of the mind itself; where, recognizing the nature of the self-mind, one no longer cherishes the dualisms of discrimination; where there is no more thirst nor grasping; where there is no more attachment to external things.

But all these descriptions only tell us what is not Nirvana. What is it like? Is it like heaven, or is it non-existence? The answer is not clear, due in large part to the Buddha's aversion to metaphysics and speculation. When he was asked such questions, he merely replied that it was "incomprehensible, indescribable, inconceivable, unutterable."