(1) = 1st spouse
(2) = 2nd spouse
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 (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 the son of Himuili and thus a grandson of the Hittite king Huzziya II (Bryce 1997, p. 131).
^ Bryce (1997) does not consider it clear whether Tudhaliya I/II was one king or two (p. 133).
^ ^a ^b ^c Bryce (1997), p. 139.
^ The existence of Hattusili II is doubtful (Bryce 1997, pp. 153–154).
^ Bryce (1997), p. 158.
^ Bryce (1997), p. 172.
^ ^a ^b ^c ^d Bryce (1997), p. 174.
^ ^a ^b Bryce (1997), p. 168.
^ Also known as Malnigal; daughter of Burnaburias II of Babylonia (Bryce 1997, p. 173).
^ ‘Great priest’ in Kizzuwadna and king (lugal) of Aleppo (Bryce 1997, p. 174).
^ ^a ^b ^c ^d King (lugal) of Carchemish.
^ Bryce (1997), pp. 174, 203–204.
^ Zannanza died on his way to Egypt to marry a pharaoh's widow, probably Ankhesenpaaten, the widow of Tutankhamun (Bryce 1997, pp. 196–198).
^ Bryce (1997), p. 227.
^ ^a ^b ^c Bryce (1997), p. 230.
^ Bryce (1997), p. 220.
^ Bryce (1997), p. 222.
^ Haas (2006), p. 91.
^ Massanauzzi married Masturi, king of the Seha River Land (Bryce 1997, p. 313).
^ Bryce (1997), p. 296.
^ Puduhepa was the daughter of the Kizzuwadnan priest Pentipsarri (Bryce 1997, p. 273).
^ Bryce (1997), pp. 346, 363.
^ 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. 332.
^ 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).
^ Bryce (1997), p. 363.
^ Great King of Tarhuntassa; son of Mursili, the Great King, who is likely identical with Mursili III/Urhi-Tesub (Bryce 2012, p. 21 f.).
^ ^a ^b Bryce (1997), p. 361.
^ Last documented Great King of the Land of Hatti.
^ King and then Great King of Carchemish (Bryce 1997, pp. 384–385).

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