There is little definitive information about Tutankhamun's life, and not even a definitive English-language name -- it is often spelled Tutankhamen, or Tut-Ankh-Amen. Historians generally agree that he was the twelfth ruler of the 18th Egyptian Dynasty, who assumed the throne when he was eight or nine years old. Before puberty he was married to his half-sister (or, possibly, niece) Ankhesenamen, daughter of Queen Nefertiti. He reigned until his death in his late teens. Some studies of his remains suggest that he was killed by a blow to the head, but more recent analysis indicates that he died from an infection after breaking his leg. He and Ankhesenamen may have had at least two children -- two mummified infants were found in Tutankhamun's tomb, but it is uncertain whether he was their father.