Fire Nation Royal Family

Fire Lord Sozin---?? Avatar Roku---Ta Min |                                                         |   Fire Lord Azulon---Fire Lady Ilah                                        ??---?? |                                                         |       +-+                     |       |                                                 |                     |           General Iroh---?? Fire Lord Ozai---Princess Ursa |                                                  |   Prince Lu Ten                                      +---+ Prince Zuko    Princess Azula