Crown Prince Thutmose was the eldest son of Pharaoh Amenhotep III and Queen Tiye. He is also knowns as Djutmose, Thutmosis and Tuthmose. His name means "Thoth is Born" or "Child of Thoth." Thutmose seems to have died somewhere between year 27 and year 33 in his father's reign, so he never became a Pharaoh. If he had, he would have been Pharaoh Thutmose V, and the Amarna Period as we know would never had occurred.
Little is known about the doomed Prince Thutmose, he's a rather obscure Amarna figure. During his short life he was, however, a very important member of the royal family, clearing being bred to be Amenhotep III's sucessor. He was a member of the priesthood of Ptah in Memphis (possibly the High Priest) and had a role in the military (which, considering his youth, may have been honorary). He seems to have spent most of his life in Memphis, but it might very well be his body that was burried with the "Elder Lady" thought to be Queen Tiye in the Valley of the Kings (near Thebes). One more interesting note: even though he was the Crown Prince, he was a very human boy. Thutmose had a pet cat, Ta-Miu ('the Kitten' or 'the lady cat'), who, like many animals in Ancient Egypt, was mummified and placed in her own sarcouphagus when she died.