His existence is disputed. In the treaty between Muwatalli II and Talmi-Šarruma of Aleppo, reference is made to a ruler named Hattusili, but it is debated whether the reference is to an otherwise unknown Hittite ruler, or rather to Hattusili I.[1]
Small caps indicates a Great King (LUGAL.GAL) of the Land of Hatti; italic small caps indicates a Great Queen or Tawananna.
Dashed lines indicate adoption.
Solid lines indicate marriage (if horizontal) or parentage (if vertical).
References:
Trevor Bryce (1997). The Kingdom of the Hittites. Oxford, England: Clarendon Press.
Trevor Bryce (2005). The Kingdom of the Hittites (new edition). Oxford, England: Clarendon Press.
Trevor Bryce (2012). The World of the Neo-Hittite Kingdoms. Oxford, England: Oxford University Press.
Volkert Haas (2006). Die hethitische Literatur. Berlin, Germany: de Gruyter.
Notes:
^Scholars have suggested that Tudhaliya I/II was possibly a grandson of the Hittite king Huzziya II; the first Tudhaliya is now known to be the son of Kantuzzili (Bryce 1997, p. 131 suggested Himuili, but the new edition, Bryce 2005, p. 122, indicated Kantuzzili).
^Bryce (1997) does not consider it clear whether Tudhaliya I/II was one king or two (p. 133); the link points to Tudhaliya II.
^King (lugal) of Tarhuntassa (Bryce 1997, p. 296); apparently later Great King of Hatti (Bryce 1997, p. 354).
^Nerikkaili married a daughter of Bentesina, king of Amurru (Bryce 1997, p. 294).
^Two daughters of Hattusili III were married to the pharaoh Ramesses II; one was given the Egyptian name Ma(hor)nefrure. Another, Gassuwaliya, married into the royal house of Amurru. Kilushepa was married to a king of Isuwa. A daughter married into the royal family of Babylon. A sister of Tudhaliya IV married Sausgamuwa, king of Amurru after his father Bentesina. From Bryce (1997), pp. 294 and 312.
^Bryce (1997), p. 363. Tudhaliya IV probably married a Babylonian princess, known by her title of Great Princess (dumu.sal gal) (Bryce 1997, pp. 294, 331).
^For example, Astour, Michael, "Hittite History and Absolute Chronology of the Bronze Age" (1989) rejects his existence; Guterbock, H.G., JNES 29 (1970) accepts his existence, and Bryce, "Kingdom of the Hittites" (1998) remains undecided.