Where's my man Huu, the pantless swamp bender?
Suki!
But didn't if clan affliation isn't traced through paternal line then every Firelord's wife would change the clan of his children. So Sozin would have been from one clan but his wife would've changed Azulons clan to something else, then because of Ilah's clan then Ozai and Iroh would be in different clans from azulon and so on.
I bet like most cultures have a royal clan forming a dynasty probably traced through the male line, I wonder if Zoryu was considered an official Keohso or if just his mother was and was just close to them.
Spoiler - I don't know if by the end we really know. Does anyone know if the clans go thorugh the father's or mother's family lines? If the father's line determines the clan I don't know it it's stated what the clan the fire Lord is from but it would be the same for Zuko & Family. if it's through the mother's line it would be from Ursa or maybe even Roku.